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Balance the following equation by oxidation number method.Please give the steps also. Fe 2+ (aq) +Cr 2 O 7 2- (aq) -----> Fe 3+ (aq) +Cr 3+ (aq).

Balance the following equation by oxidation number method.Please give the steps also.
Fe2+ (aq) +Cr2O72-(aq) -----> Fe3+(aq) +Cr3+ (aq).

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Fe2+ goes from +2 to +3 
Cr goes from +6 to +3 
The balanced equation is 
6 Fe2+ + Cr2O72- + 14 H+ --> 6 Fe3+ + 2Cr3+ + 7H2O

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