Post a New Question

Chemistry

posted by .

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 out each side to the same amount of oxidation numbers??

  • Chemistry -

    Draw a line, something like this, at the bottom of the equation connecting Ag and AgNO3.
    |_______________|. Write zero under Ag and +1 under Ag of AgNO3.
    Now draw another line upside down from the one above and place it above the equation connecting N of HNO3 and N of NO2. |--------------| N for HNO3 is +5 and N of NO is +2. Write those in similar to the way you did the Ag and AgNO3.That gives you everything you need to balance it. On the Ag to AgNO3, write
    |____loss of 1e______|
    On the N to N write
    |-----gain of 3e ----|.
    You must keep the electrons equal; therefore, multiply the Ag to AgNO3 by 3 and the HNO3 to NO by 1. That gives you the following
    3Ag + HNO3 ==> 3AgNO3 + NO + H2O
    I'm sure you have all of this already, probably a dozen or more times. The next part is the tricky part.
    The redox part is balanced. Now you must recognize that the NO3 in AgNO3 is not reduced like the NO3^- to NO. So we need 1 HNO3 for the NO part of the equation(the redox part) and we need another 3 HNO3 to take care of the 3AgNO3 (from the non-redox part). So 3+1 = 4 and we make it 4HNO3 like this.
    3Ag + 4HNO3 ==> 3AgNO3 + NO + H2O.
    All you need to do now is to balance the H2O (it's 2H2O) and you'll have it. :-)

  • Chemistry -

    OMG Doctor Bob you are a huge help!
    And you right i did have that a dozen times lol but i wasn't sure if i had it right because i couldn't het the last part to work out for me!

    But i have it now so thanks a bunch!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Please, will someone help me balance this equation?
  2. 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 …
  3. 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. …
  4. 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. …
  5. chemistry

    Ag+HNO3-----AgNO3+NO+H2O balance the redox reaction using the oxidation-number method
  6. 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
  7. chem

    Balance the following redox equation by the oxidation number methode Ag + HNO3 = AgNO3 + NO + H2O
  8. Chemistry

    Balance the redox equation by oxidation number method: Cr2O7 2- + Br- + H+ = Cr 3+ + Br + H2O Please help!
  9. chemistry

    Using the change-in-oxidation-number method, balance the redox reaction below. Show your work; partial credit will be given. NO2– + MnO4– → NO3– + Mn2+ Figure out which atoms’ oxidation numbers are changing, and by how …
  10. 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 …

More Similar Questions

Post a New Question