Balance the following equation in acidic solution using the lowest possible inte

Question

Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water.
ClO4-(aq) + Cl-(aq) ? Cl2(aq) + ClO-(aq)

2

3

Please explain how to solve this with details and steps written out and how it is 3, not 2. Thank you!

Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water.
ClO4-(aq) + Cl-(aq) ? Cl2(aq) + ClO-(aq)

2

3

Please explain how to solve this with details and steps written out and how it is 3, not 2. Thank you!

Explanation / Answer

ClO4-(aq) + Cl-(aq) -------------> Cl2(aq) + ClO-(aq)

Oxidation half reaction                                                   Reduction half reaction

2Cl^- (aq) -----------> Cl2(g)                           ClO4^- (aq) ------------> ClO^- (aq)

2Cl^- (aq) -----------> Cl2(g)                           ClO4^- (aq) ------------> ClO^- (aq)+3H2O

2Cl^- (aq) -----------> Cl2(g)                           ClO4^- (aq)+6H^+(aq) ------> ClO^- (aq)+3H2O

2Cl^- (aq) -----------> Cl2(g)+2e^-              ClO4^- (aq)+6H^+(aq)+6e^- ------> ClO^- (aq)+3H2O(l)

                             6Cl^- (aq) -----------> 3Cl2(g)+6e^-          

ClO4^- (aq)+6H^+(aq)+6e^- ------> ClO^- (aq)+3H2O(l)

--------------------------------------------------------------------------------------

             ClO4^-(aq) + 6Cl^-(aq) + 6H^+(aq) --------> ClO^- (aq) + 3Cl2(g) + 3H2O(l) overall reaction

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