[firzzy87]

1) A balance chemical equation for the reduction of ClO-(hypochlorite) by I-in acidic solution
2) A balance chemical equation for the reduction of I2 by S2O3 in acidic solution 
 

[Albert]

Show us your attempts, please.

[firzzy87]

CIO-2+I2 ------> I- + ClO3
             H+

[firzzy87]

i dont know ehether ots balance or not

[woelen]

CIO-2+I2 ------> I- + ClO3
             H+

You were talking about I(-) and not of I2.

I will not simply write down the equations, but I'm willing to help you with the reactions.

First, what do you think are the reaction products of ClO(-) and I(-)? First determine these (you should have this info available, otherwise you could not solve this equation).

The other one, that is reaction between I2 and S2O3(2-), and not between I2 and S2O3. The compound S2O3 does not exist, the ion S2O3(2-) is the well-known thiosulfate and this reaction is very well known in iodometry.

In the latter reaction I will hint you. I2 is converted to I(-) and S2O3(2-) is converted to S4O6(2-), tetrathionate ion. With this info you should be able to balance the equation. No other ions and/or molecules are involved, just I2, I(-), S2O3(2-) and S4O6(2-).

Success!

[firzzy87]

Hmm .. that's means I- involve reduction while S2O3 invole oxidation ...

 

[AWK]

1) A balance chemical equation for the reduction of ClO-(hypochlorite) by I-in acidic solution
2) A balance chemical equation for the reduction of I2 by S2O3 in acidic solution 
 

Just write down reaction correctly
ClO^- + I^- + H₃O⁺ = I₂ + Cl^- + H₂O

The second reaction proceeds in neutral solution