# Chemistry

posted by .

need help to balance half reaction in basic solution
IO3 to I2

• Chemistry -

The problem most students have with an equation like this is "they don't start of even." That is you must make the I atoms the same BEFORE you start balancing.
2IO3^- == I2.
That's step 1.
2. Balance electrons change.
10+ total on IO3^- and zero total on I2; therefore,
2IO3^- + 10e ==> I2

3. Now count up the charge on each side and add OH^- ions (add H^+ for acid solutions). I see -12 on the left and zero on the right.
2IO3^- + 10e ==> I2 + 12OH^-

2IO3^- + 10e + 6H2O ==> I2 + 12OH^-

## Similar Questions

1. ### Chemistry

Using the half- reaction method, balance the redox reaction shown below. (I-)+(Br2) ---> (IO3-)+(Br-) Step 1. Break the reaction into the two half reactions. Br2 ==> Br^- I^- ==> IO3^- Step 2. I will leave the first one for …
2. ### Chemistry - DrBob222 please check and help

Can you check these? And I need help on one. Oxidation Number Method of Balancing Redox Reactions 1)Neutral Solution Sn^2+ + Fe^3+ ----> Fe^2+ + Sn^4+ Balanced equation Sn^2+ + 2Fe^3+ ----> 2Fe^2+ + Sn^4+ 2)Acidic Solution Fe^2+
3. ### Chemistry - DrBob222 please check and help

Can you check these? And I need help on one. Oxidation Number Method of Balancing Redox Reactions 1)Neutral Solution Sn^2+ + Fe^3+ ----> Fe^2+ + Sn^4+ Balanced equation Sn^2+ + 2Fe^3+ ----> 2Fe^2+ + Sn^4+ 2)Acidic Solution Fe^2+
4. ### Chemistry

Balance these reactions using the half-reaction method Sn2+ + IO3- -> Sn4= + I- (acidic solution) CrO2 + ClO- -> CrO42- + Cl- (basic solution)
5. ### Chemistry

I know nothing about chemistry, but am wondering if someone could help me with these. 1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ® ZnCl2 + H2O 2) Balance this redox reaction using the half-reaction …
6. ### chemistry half reactions

How do i solve this half reaction with Mg(OH)2(s) --> Mg(s)?
7. ### chemistry

Using the half-reaction method, balance the redox reaction below. Show your work; partial credit will be given. I- + Br2 → IO3- + Br- Write the reduction and oxidation half-reactions. Balance them for atoms. Balance each of the …
8. ### chemistry

balance half equations in basic solution ClO3- to ClO4- Zn to zn2+ BrO3- to Br- IO3- to I2 Sn2+ to Sn4+
9. ### Chemistry

1. Balance the following half reactions in basic solution. ClO3- (aq) ¨ ClO4- (aq) Zn (s) ¨ Zn2+ (aq) BrO3- (aq) ¨ Br- (aq) IO3- (aq) ¨ I2 (s) Sn2+ ¨ Sn4+
10. ### chemistry

Will you help me use the half reaction method to balance these equations. I need to add water molecules and hydrogen ions in acid solutions. I also need to keep the balanced equations in net ionic form. thanks 1) Cl-(aq) + NO3-(aq) …

More Similar Questions