Chemistry

posted by .

Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd)

MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l)
i got 2525 and its going in as incorrect

Now you get to balance this equation (answer in the same way as in the problem above):

Al(s) + NO3−(aq) + OH−(aq) + H2O → Al(OH)4−(aq) + NH3(g)

i go 2121 but its not correct

  • Chemistry -

    MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l)

    in the form

    a*MnO4−(aq) + b*SO32−(aq) + c*H+(aq) → d*Mn2+(aq) + e*SO42−(aq) + f*H2O(l)

    Start by counting how many of each are on each side. I'm going to choose to use the convention [element (left, right)]
    Mn(1,1)
    O(7,5)
    S(1,1)
    H(1,2)

    b=e; (Balancing the sulfur, S)
    a=d; (Balancing the Mn)
    c=2*f; (Balancing the hydrogen)
    3*b + 4*a = 4*e + f (Balancing the oxygen)

    So let a=e = 1; b=1; f=3
    (3*1 + 4*1 = 4*1 + 3)
    d=1
    c=6

    So the equation is
    MnO4−(aq) + SO32−(aq) + 6H+(aq) → Mn2+(aq) + SO42−(aq) + 3H2O(l)

    2nd problem:
    Al(s) + NO3−(aq) + OH−(aq) + H2O → Al(OH)4−(aq) + NH3(g)

    of the form

    a*Al(s) + b*NO3−(aq) + c*OH−(aq) + d*H2O → e*Al(OH)4−(aq) + f*NH3(g)

    Al(1,1)
    N(1,1)
    O(5,4)
    H(3,7)

    a=e (balancing the aluminum)
    b=f (balancing the nitrogen)
    3*b + c + d = 4*e (balancing the oxygen)
    c + 2*d = 4*e + 3*f (Balancing the hydrogen)

    You should be able to experiment with numbers and balance this out

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    what is the oxidation half reaction, reduction half reaction, and the complete balanced reaction of the following?
  2. CHEMISTRY HELP ASAP

    Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd) MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l) i got 2525 and its going in …
  3. Can someone please help me with balancing ASAP

    Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd) MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l)
  4. Chemistry

    Given the following half-reactions and associated standard reduction potentials: AuBr−4(aq)+3e−→Au(s)+4Br−(aq) E∘red=−0.858V Eu3+(aq)+e−→Eu2+(aq) E∘red=−0.43V IO−(aq)+H2O(l)+2e−→I−(aq)+2OH−(aq) …
  5. CHEMISTRY 1

    What is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants?
  6. CHEMISTRY

    Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd) CrO42−(aq) + H2O(l) + HSnO2− → CrO2−(aq) + OH−(aq) + HSnO3−(aq)
  7. chemistry

    Which of the following half-reactions would occur at the anode of an electrochemical cell?
  8. chemistry

    Diborane (B2H6) is a highly reactive boron hydride, which was once considered as a possible rocket fuel for the U.S. space program. Calculate ∆H for the synthesis of diborane from its elements, according to the equation 2 B (s) …
  9. 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 …
  10. Chemistry

    Balance both the atoms and charges of the following chemical equation: Ce4+ + S2 −→ Ce3+ + S This is what I came up with: 3Ce4+ + S2 −→ 4Ce3+ + 2S

More Similar Questions