Kiến Thức Chung

C + HNO3 = CO2 + NO2 + H2O oxidation, reduction and balancing

    C + HNO3 = CO2 + NO2 + H2O oxidation, reduction and balancing

    10,284 results

  1. chemistry

    P4 + HNO3 = H3PO4 + NO2 + H20 by partial method balancing

  2. Chemistry

    Balance the following redox equation by the oxidation number methode Ag + HNO3 = AgNO3 + NO + H2O I have all the oxidation numbers i just don’t understand how i’m supposed to balance it according to them. I read the sites and i can’t get it. Do i balance

  3. Chem Check Please!!!

    1) Assuming the following reaction proceeds in the forward direction, 3 Sn4+(aq) + 2 Cr(s) —> 3 Sn2+(aq) + 2 Cr3+(aq) a.Sn4+(aq) is the reducing agent and Cr(s) is the oxidizing agent. b.Cr(s) is the reducing agent and Sn2+(aq) is the oxidizing agent.

  4. Chem

    Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0×10^6 kg

  5. Chemistry

    NH3(g) + 2O2 (g) = HNO3 (aq) + H2O (l) How do I calculate the oxidation states of Nitrogen and figure out if it is reduced, oxidized or neither? My answer is below. I am not sure if I am figuring it right. Please advise. NH3(g) + 2O2 (g) = HNO3 (aq) + H2O

  6. chemistry

    Carbon dioxide (CO2) reacts with water (H2O) to form carbonic acid (H2CO3). Which equation demonstrates the law of conservation of matter for this reaction? A. 2 CO + H2O —> H2CO3 B. CO2 + H2O —> H2CO3 C. CO2 + 2 H2O —> 2 H2CO3 D. 2 CO2 + 2 H2O —>

  7. Chemistry

    What is the ionic and net ionic equation for Na2CO3 + 2 HNO3 -> 2 NaNO3 + H2O + CO2 (g) This is what i have so far… Na2(aq)+CO3+H+NO3 -> Na+ NO3+ H2O(l)+CO2(g)… i don’t know what to do!!!

  8. Chemistry

    Dr.Bobb222 please help balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answer.) (a)

  9. Chemistry–please check

    1. Which is true about spontaneous reactions? a. For a reaction to be spontaneous, Keq = 1. b. Spontaneous reactions happen very rapidly. c. A chemical reaction is spontaneous in both directions. *** d. Spontaneous reactions do not require that anything be

  10. Science

    Balance this equation using oxidation method:I2+HNO3—->HIO3+NO2+H2O

  11. Chemistry

    which equation represents an oxidation-reduction reaction? 1.HCl+KOH–>KCl+H2O 2.4HCl+MnO2–>MnCl2+2H2O+Cl2 3.2HCl+CaCO3–>CaCl2+H2O+CO2 4.2HCl+FeS–>FeCl2+H2S

  12. Chemistry

    C + HNO3 = CO2 + NO2 + H2O oxidation, reduction and balancing

  13. CHEM

    Consider the reaction, 3 NO2(g) + H2O(l) ® 2 HNO3(aq) + NO(g), where DH = – 137 kJ. How many kilojoules are released when 92.3 g of NO2 reacts?

  14. Chemistry- Dr Bob

    Dr Bob Can you please assist Redox balancing in BASIC sol. NO2- +Al–>NH3 +Al(OH)4- if you could please walk through step by step. I don’t know how to get oxidation #s for Al(OH)4- vs. Al I get Al=0 Al(OH)4-= +3 But if so…then my oxidation half reaction

  15. chem

    For the reaction 3NO2 + H2O 2HNO3 + NO, how many grams of HNO3 can form when 1.00 g of NO2 and 2.25 g of H2O are allowed to react? This is a limiting reagent problem. 1. Write the equation. You have done that and it is balanced. 2. Convert 1.00 g NO2 and

  16. Chemistry

    Balance the follow equation using change in oxidation number method. (1) P4 + HNO3 = H3PO4 +NO2 + H2O (2) Na2Cr2O7 + FeCl2 + HCl = CrCl3 + NaCl + FeCl3 + H2O

  17. Chemistry

    Write the ionic equation for these reaction. Ca(HCO3)2 + HCL = CaCl2 + CO2 + H2O ZnO + HNO3 = Zn(NO3)2 + H2O

  18. Chemistry

    Which of the following sets of compounds DO NOT follow the law of multiple proportions? a) NH3, H2O and NO2 b) NO, NO2 and N2O5 c) CO, CO2 and CH4 d) H2O, CO2 and CH4

  19. Chemistry

    Is 3HCl(aq)+HNO3(aq)->Cl2(g)+NOCl(g)+2H2O(l) an oxidation-reduction reaction?

  20. Chemistry

    Identify the following as either reduction or oxidation: a. 2I^- -> I2 + 2e- (my answer oxidized) b. Zn2+ + 2e^- -> Zn (reduced) could someone check my answers? I remember OIL RIG (oxidation is loss, reduction is gain.) but I’m still uncertain of what I

  21. chemistry

    h2s + HNO3 –>s+ no+H2O balance by oxidation number change

  22. Chemistry

    Balancing Equation Al2C3O3 + H3PO4 –> AlPO4 + CO2 + H2O

  23. Chemistry

    Electron Transfer Theory Write an label the oxidation and reduction half-reaction equations. a) Ni(s) + Cu(NO3)2(aq) -> Cu(s)+ Ni(No3)2(aq) oxidation – Ni(s) -> Ni2+(aq) + 2e- reduction – Cu2+(aq) + 2e- -> Cu(s) b) Pb(s) + Cu(NO3)2(aq) -> Cu(s) +

  24. Chemistry

    Hey, can you help me balance this equation? Cu2S + HNO3 –> Cu(NO3)2 + CuSO4 + NO2 +H2O Thanks!

  25. chemistry grade 12

    Question: Balance the following reactions by the oxidation number method. a) I2 + HNO3 –> HIO3 + NO2 + H2O so i have N +5 to +4 net charge = -1 I 0 to +5 net charge = +5 i add coefficient where the oxidation number is changing. in this case I2 + 4HNO3 –>

  26. chemistry

    Balance following oxidation reduction reactions using oxidation states method? a) Cl2(g) + Al(s) –> Al3+(aq) + Cl- b.) O2(g) + H2O(l) + Pb(s) –> Pb(OH)2(s) c) H+(aq) + MnO4-(aq) + Fe2+(aq) –> Mn2+(aq) + Fe3+(aq) + H2O(l)

  27. Chem

    Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0×10^6 kg

  28. chemistry

    When nitrogen dioxide (NO2) from car exhaust combines w/ water in the air it forms nitric acid (HNO3), which causes acid rain, and nitrogen monoxide. 3NO2(g)+ H2O(L)—–>2HNO3(aq)+ N(g) a.How many molecules of NO2 are needed to react with 0.250 mole H2O?

  29. Chemistry

    This is a stoichiometry equation. Cu(s) + 4(HNO3)(aq) -> Cu(NO3)2(aq) + 2(NO2)(g)+2(H2O)(l) If you use 6 moles of nitric acid 4(HNO3), how many moles of Copper (II) Nitrate Cu(No3)2 will be produced?

  30. chemistry

    When nitrogen dioxide (NO2) from car exhaust combines w/ water in the air it forms nitric acid (HNO3), which causes acid rain, and nitrogen monoxide. 3NO2(g)+ H2O(L)—–>2HNO3(aq)+ N(g) a.How many molecules of NO2 are needed to react with 0.300 mole H2O?

  31. Chemistry

    Electron Transfer Theory Write an label the oxidation and reduction half-reaction equations. a) Ni(s) + Cu(NO3)2(aq) -> Cu(s)+ Ni(No3)2(aq) oxidation – Ni(s) -> Ni2+(aq) + 2e- reduction – Cu2+(aq) + 2e- -> Cu(s) b) Pb(s) + Cu(NO3)2(aq) -> Cu(s) +

  32. chemistry

    Nitric acid is produced commercially by the Ostwald process, represented by the following equations. 4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g) 2 NO(g) + O2(g) 2 NO2(g) 3 NO2(g) + H2O(l) 2 HNO3(aq) + NO(g) What mass in kg of NH3 must be used to produce 4.4

  33. Chemistry

    Balancing Complete Redox Reactions I need help on the half reduction part for both reduction and oxidation of Cl2(g) –> cl^1- (aq) + OCl^1- (aq). I got both of the half reactions started. Cl2 –> Cl^- (Reduction) …. Cl^1- (aq) + OCl^1- (aq) (Oxidation)

  34. Chemistry 12

    a) Use the standard reduction potentials table to balance the following redox equation: H2O2 + I + H = H2O + I2 b) Balance the following redox equation by the oxidation number method: Ag + HNO3 = AgNO3 + NO + H2O

  35. Chemistry

    I’m having a hard time balancing the following chemical equations: – F2 + NaOH -> O2 + NaF + H2O – Ca(AlO2)2 + HCl -> AlCL3 + CaCL2 + H2O – Ba(OH)2 + HNO3 -> BA(NO3)2 + H2O

  36. chemistry

    What is the oxidizing agent in the following reaction? Sn(s) + 2HCl(aq) → SnCl2(aq) + H2(aq) HCl H2 Sn SnCl2 . Question 2 The following is an oxidation-reduction reaction: H2CO3(aq) → CO2(g) + H2O(l) True False

  37. AP Chemistry

    2 Al + 3 Cu(NO3)2 –> 2 Al(NO3)3 + 3 Cu 1. Write balanced equations for the oxidation and reduction half-reactions. Identify each half-reaction as oxidation or reduction. 2. In the balanced overall reaction, determine which is the oxidation and reduction

  38. chemistry

    how many grams of HNO3 can be produced if 225 grams of NO2 is mixed with 55.2 g of H2O? 3NO2 + H2O=2HNO3 + NO

  39. Chemistry!!!!

    1. For a reaction mechanism to be plausible, what 2 criteria must be met? 2. The reaction between CO and NO2 to produce NO and CO2 is thought to occur in 2 steps. NO2 + NO2 ====> NO + NO3 NO3 + CO =====> NO2 + CO2 The experimental rate law is, R=k[NO2]2

  40. chemistry

    3NO2(g) + H2O(l) → 2HNO3(l) + NO(g) How many moles of the excess reactant remain if 2.00 moles of H2O(l) and 5.00 moles of NO2(g) are used? Question 30 options: 1.67 mol H2O(l) 3.00 mol NO2(g) 4.00 mol NO2(g) 1.00 mol NO2(g) 0.33 mol H2O(l)

  41. Chemistry

    I get that you’re supposed to balance; however, I was confused on how to do the reduction and oxidation electron equations (the simplist way). Looked at too many examples online but nothing was clear. 1) Cu + HNO3 → Cu(NO3)2 + NO2 + H2O 2.) KMnO4 + H2SO4

  42. Chemistry

    Why is sulfur dioxide (SO2) a better reducing agent than carbon dioxide (CO2) or nitrogen dioxide (NO2)? I really don’t know how to answer your question. It’s much like asking why the sky is blue, etc. You can look up the reduction potentials of SO2 vs CO2

  43. chemistry grade 12

    Question: Balance the following reactions by the oxidation number method. a) I2 + HNO3 –> HIO3 + NO2 + H2O b) MnO4- + H+ + Cl- –> Mn2+ + Cl2 + H2O I know how to give each atom oxidation number but after i don’t know how to apply the method.

  44. chem urgent!

    Set up a Hess’s law cycle, and use the following information to calculate ÄH°f for aqueous nitric acid, HNO3(aq). You will need to use fractional coefficients for some equations. 3 NO2(g) + H2O(l) 2 HNO3(aq) + NO(g) ÄH° = -138.4 kJ 2 NO(g) + O2(g) 2

  45. Chemistry

    Question: What is the maximum number of liters of HNO3(g) that can be made from 14.88 L of H2O(g) and 10.66 L of NO2(g) at STP? 3 NO2(g) + H2O(g) ==> 2 HNO3(g) + NO(g) I have no idea how to do this. Please help if you can.

  46. AP Chem

    3 NO2(g) + H2O(g) 2 HNO3(g) + NO(g) At constant temperature and pressure, what is the maximum volume, in liters, of HNO3(g) that can be made from 10.39 L of NO2(g) and 15.53 L of H2O(g)?

  47. chemistry grade 12

    Thanks DrBob222 for previous answers. Question: Balance the following reactions by the oxidation number method. a) I2 + HNO3 –> HIO3 + NO2 + H2O b) MnO4- + H+ + Cl- –> Mn2+ + Cl2 + H2O

  48. chemistry

    Balancing redox equations reactants: Cu, NO3^- (the negative sign is nex to the O, above the 3). products: Cu^2+, NO2 Medium: Acidic Cu+ NO3^- —-> Cu^2+ + NO2 Okay, I don’t understand how to do this problem…but something someone needs to clear up for

  49. chem

    When balancing the following, what is being reduced, what are the reducing agents, and what is the initial and final oxidation states of the reduction agent? Fe3O4(s) + C(s) > CO2 (g) + Fe

  50. Chemistry

    Long question but its my last one for homework and im stuck on this word problem. Biomass is represented by the empirical formula C60H87O23N12P. Write a balance equation for the oxidation of C60H87O23N12P with O2 to form CO2, H2O, HNO3, and H3PO4 beginning

  51. chemistry

    3 NO2(g) + H2O(g) ==> 2 HNO3(g) + NO(g) What is the maximum number of liters of HNO3(g) that can be made from 17.45 L of H2O(g) and 12.06 L of NO2(g) at STP?

  52. chem

    Section: Ionization expressions, Weak Bases Using the equilibrium constants listed in your book, arrange the following .1 M aqueous solutions in order of increasing pH. a)NaNO2 b)HCl c)NaF d)Zn(H2O)3(OH)(NO3) Here’s what I have so far: a) NaNO2 –> Na+ +

  53. chemistry grade 12

    Question: Balance the following reactions by the oxidation number method. a) I2 + HNO3 –> HIO3 + NO2 + H2O so i have N +5 to +4 net charge = -1 I 0 to +5 net charge = +5 i add coefficient where the oxidation number is changing. in this case I2 + 10HNO3

  54. AP Chem

    I’m having trouble balancing these two oxidation-reduction reactions that occur in a basic solution. Can anyone help? Please? The numbers after the formulas are subscripts and any with a minus sign means they are negatively charged (-1). Thanks!! Al(s)+

  55. chemistry

    Please, will someone help me balance this equation? There’s always one element I just can’t seem to balance. Cu+HNO3===>NO2+Cu(NO3)2+H20 Thanks for the help. Try this. Cu + 4HNO3 ==> 2NO2 + Cu(NO3)2 + 2H2O You’re a genius! Do you think you could tell me

  56. Chemistry

    3 NO2(g) + H2O(l)—>2 HNO3(aq) + NO(g) Suppose someone needs 25.0 kg of HNO3. How much NO2 should they start with to end up with the amount they need?

  57. Chem Help!

    I really need help for my homework on balancing equations please show all the work including the coeffients if needed. I need help with 3 questions, 1) NaN3 -> Na + N2 2) NO2 + O2 -> NO + 03 3) LiOH + CO2 -> Li2CO3 + H2O

  58. Chemistry

    What are the Oxidation and Reducation reactions for these equations : BaCl2 + NaHCO3 -> BaCO3 + NaCl + HCl (carbon is the reduction reaction, but I don’t know what the oxidation reaction is) CaCO3 + HCl -> CaCl2 + CO2 + H2O

  59. Chemistry

    NO2 +H2O –> HNO3 + NO 3*NO2 +H2O –> 2*HNO3 + NO Properly balanced right?

  60. physics 30

    Given the reaction 3 NO2(g) + H2O(l) ¨ 2 HNO3(l) + NO(g) ƒ¢rH = -72.0 kJ, calculate the molar enthalpy of reaction, rH for: 1) NO2(g) 2) H20 (l) 3) HNO3 (l) 4) NO (g) Express you answer in Kj/mol

  61. Chemistry

    I am pretty good at balancing oxidation reduction problems, but I can’t do this one: HIO3 + FeI2 + HCL -> FeCl3 + ICl + HOH 5HIO3 + 4FeI2 + 25HCl -> 4FeCl3 + 13ICl + 15HOH I separated the three redox equations, added the two oxidation reactions together,

  62. Chemistry

    Does the conversion of hydrogen peroxide to oxygen involve oxidation or reduction? What substance is acting as the oxidizer or reducer? and Does the conversion of hydrogen peroxide to water involve oxidation or reduction? What substance is acting as the

  63. Soil Chemistry

    In saturated soils, oxygen is quickly depleted and microbes must utilize the next most favorable electron acceptor, in this case sulfate (SO42-). Under these conditions, Mn (and Fe) are oxidized to Mn2+ (and Fe2+). Select the correct oxidation and

  64. Chemistry

    Balancing Complete Redox Reactions I need help on the half reduction part for both reduction and oxidation of Cl2(g) –> cl^1- (aq) + OCl^1- (aq). I got both of the half reactions started. Cl2 –> Cl^- (Reduction) …. Cl^1- (aq) + OCl^1- (aq) (Oxidation).

  65. Chemistry Honors

    I need help balancing equations 1) CH4+O2–>CO2–>+H2O 2) Hf+N2–>Hf3N4 3) Mg+H2SO4–>MgSO4+H2 4) C2H6+O2 –>CO2+H2O 5) Pb(NO3)2 + NaI–> PbI2+NaNO3 6) Fe+O2–>Fe3O4

  66. Chemistry

    Need help with : Balancing oxidation reduction reactions Mg(s) + HCl(aq) → Mg^2+(aq) + Cl ‾(aq) + H2(g)

  67. General Chemistry

    Balance the following redox reaction in acidic and basic solutions: Fe(OH)2(s) + O2(g) –> Fe(OH)3(s) These are the steps my instructor gave us to balance redox reactions: 1. Divide into 1/2 rxns (reduction & oxidation) 2. Balance atoms other than H & O 3.

  68. Chemistry

    Determine the mass of each reactant needed to give 1.5 mol of HNO3 NO2(g)+H2O(l)—> HNO2(aq)+HNO3(aq)

  69. Chemistry

    Hi I need help with another balancing oxidation-reduction reaction: Cu(s) + Ag^1+(aq) → Cu^2+(aq) + Ag(s) My work: Cu (s) –> Cu^2+ (aq) + 2e- 2 [1e +Ag^1+ (aq) –> Ag(s)] Cu(s) + 2 Ag(aq) –> Cu (aq) + 2 Ag (s) Is this right? And I need help with this

  70. physics

    Which of these are balenced? 2 C4H10( g) + 13 O2( g)h8 CO2( g) + 10 H2O(l) 4 C6H7N5O16(s) + 19 O2( g)h24 CO2( g) + 20 NO2( g) + 14 H2O(g) I don’t understand this anyhelp would be greatly appreciated.

  71. chemistry

    Following oxidation-reduction reaction by using the oxidation state method a) O2+H2O+Pb=Pb(OH)2

  72. Chemistry

    How would you balance this equation?? Ba(NO3)2 + NH2SO3H + H2O -> Ba(NH2SO3)2 + HNO3 Would you have to make the H2O 0, ultimately removing H2O from the equation (is that even allowed?), or is there another way of balancing it??

  73. Chemistry

    Some bacteria get their energy from reduction of CO2 to CH4 by H2. 1. How many electrons are required to reduce CO2 to CH4? 2. Calculate the G for formation of methane based on the two standard reduction potential of -0.171V for reduction of CO2 to CH4 and

  74. Chemistry

    Some bacteria get their energy from reduction of CO2 to CH4 by H2. 1. How many electrons are required to reduce CO2 to CH4? 2. Calculate the G for formation of methane based on the two standard reduction potential of -0.171V for reduction of CO2 to CH4 and

  75. Chemistry

    Calculate the percent yield for the reaction if 76.8 g of H2O reacted and 125 g of NO were produced. NO2+H2O->HNO3+NO

  76. Chemistry

    1. Nitric acid is produced via the following equation: 3 NO2 + H2O = 2HNO3 + NO. How many grams of NO2 are required to produce 7.5 grams of HNO3?

  77. Chemistry

    Can u help me in balancing the following eqn. through oxidation no. method or half reaction method. Also please show and explain the steps. HNO3(aq.) + KI(aq.) —–> NO(g) + I2(s)+ H2O(l) + KNO3(aq.) Hoping for a quicker response. I goes from -1 to 0 N

  78. Chem

    Balancing equations? NaOH + H3PO4 —-> Na3PO4 + H2O C3H8 + O2 —-> CO2 + H2O

  79. Reaction Descriptions

    Complete the table below: Enter all letters containing appropriate descriptions for each of the equations below. a. precipitation reaction b. neutralization reaction c. oxidation reduction reaction d. molecular equation e. complete (total) ionic equation

  80. Chemistry

    When the following equation is balanced with the smallest integral coefficients, the coefficient of the HNO3 is Li2CO3(s) +HNO3(aq) — LiNO3(aq)+H2O(l)+CO2

  81. Chemistry

    Can someone help me balance this equation? MnO4(¨C) + H(+) + C2O4(2¨C)–> Mn(2+) + H2O + CO2 Sure but tell us what you don’t understand about it. You need to learn how to do them yourself. Tell me what you don’t understand, in detail, and I can help you

  82. Science

    1. Remember all of our questions pertain to the reaction below: Br-(aq) + NO3- ==> NO(g) + Br2(l) Options: Br, N, O, -2, -1, 0, +1, +2, -5, -4, -3, -2, -1, 0, +1, +2, +3, +4, +5 [Select] is oxidized, it’s oxidation number changes from [Select] to [Select].

  83. AP Chemistry

    Rank the following in terms of increasing ox- ide acidity. 1. Na2O, CO2, NO2 2. CO2, NO2, Na2O 3. NO2, CO2, Na2O 4. CO2, Na2O, NO2

  84. Chemistry

    I am having trouble with the balancing the oxidation-reduction equations that are in a basic solution. This is the first one that I’m doing that’s in a basic solution, and I can’t get it! I get everything right except I get 2H2O instead of one on the left.

  85. chemistry

    Balance the following oxidation-reduction reactions, which occur in acidic solution, using the half-reaction method. (Use the lowest possible coefficients. (a) H2O2(l) + Pb(s) → H2O(l) + Pb2+(aq) (b) O2(g) + Mn(s) → H2O(l) + Mn2+(aq)

  86. Physical Science

    Balancing Equations Al+N2–>AlN NH4NO3–>N2O+H2O Pb(NO3)2+HCl–>PbCl2+HNO3

  87. Chem(redox rxn)

    How do you know which element is being oxidized? Oxidation is lost, Reduction is gained. So in this equation: 2 MnO4^- + 5 C2O4^2- + 16H+ (right arrow) 2 Mn^2+ + 10 CO2 + 8 H2O what element is oxidized? a. no element is oxidized b. Mn c. C d. O my answer

  88. Physical Science

    Balance this equation: I2+HNO3 = HIO3+NO2+H2O

  89. chemistry

    C+HNO3=H2CO3+H2O+NO2 which type of reaction is it.

  90. chemistry

    In which of the following reactions is ΔE closest in value to ΔH? HNO3(aq) + Na2(CO3)(aq) = NaNO3(aq) + H2O(l) + CO2(g) KClO3(s) = KCl(s) + (3/2)O2(g) HCl(aq) + NaOH(aq) = H2O(l) + NaCl(aq) Na(s) + H2O(l) = NaOH(aq) + (1/2)H2(g)

  91. Chemistry

    Having trouble balancing redox equations. Teacher says I should use the method of half reactions and I’m not sure how. Any explanation or formula would be nice. C6H12O2 –> C2H4O2 SO2+H2O+O2 –> H2SO4 C2H6O+O2 –> CO2 + H2O

  92. chemistry

    1)The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 0.718 grams of methane are reacted, how many grams of water vapor are produced? B. If 1.621 grams CO2 are

  93. Chem

    Is this half-reaction H2(g) + 2 OH-(aq) ===> 2 H2O(l) = 2 e reduction or oxidation?

  94. chemistry

    Balance by partial methods P4 + hno3 = h3po4+ no2+h2o

  95. Chemistry!!!!

    1. For a reaction mechanism to be plausible, what 2 criteria must be met? 2. The reaction between CO and NO2 to produce NO and CO2 is thought to occur in 2 steps. NO2 + NO2 ====> NO + NO3 NO3 + CO =====> NO2 + CO2 The experimental rate law is, R=k[NO2]2

  96. Chemistry

    Use half reaction to balance: CuS + NO3^- = Cu(NO3)2 + NO2 + SO2 S^2- = SO2 S Oxidized Cu^2+ + NO3^- = NO2 + Cu(NO3)2 N Red After balancing the atoms & balancing the charges, I cannot get all the correct coefficients

  97. chemistry

    Balance each of the following equations a)CH4+CL2……>CCl4+HCl b)AL(OH)3+H2SO4…..>Al2(SO4)3+H2O c)Fe+H2O……>fe3O4+H2 d)Al4C3+HCl……>AlCl3+CH4 e)C2H6+O2……>CO2+H2O f)P2H4…….>PH3+P4 g)S2Cl2+NH3……>N4S4+NH4CL+S8

  98. chem

    Determine whether the following are endothermic or exothermic. 2H2O2 (l) ¨ 2H2O(l) + O2(g) ∆H = -190 kj C(s) + H2O (g) ¨ CO (g) + H2 (g) ∆H = +113 kj C4H9OH(l) + 6 O2(g) ¨ 4 CO2(g) + 5 H 2O(g) ∆H = -2456.1 2 C(s) + H2(g) ¨ C2H2(g) ∆H =

  99. Chemistry

    What occurs in the process of ionization? A. Acids dissociate to produce hydroxide ions, as their only negative ions. B. Strong bases ionize almost completely yielding a maximum quantity of hydrogen ions. C. Stationary solid ions are produced. D. Ions are

  100. Chemistry

    I am having so much trouble understanding how to classify reactions as precipitation, acid base, or oxidation reduction. In one example in particular, it reads Iron II oxide reacts with oxygen and water to yield Iron III hydroxide. I wrote out the equation

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