Question

Shown below is an oxidation-reduction reaction in acidic solution. Which of the following correctly balances the reaction?

ClO−4+Rb→ClO−3+Rb+

Select the correct answer below:

A. ClO−4+Rb+2H+→ClO−3+Rb++H2O

B. 2ClO−4+Rb+4H+→2ClO−3+Rb++2H2O

C. ClO−4+2Rb+2H+→ClO−3+2Rb++H2O

D. ClO−4+3Rb+2H+→ClO−3+3Rb++H2O

Answer 1

The redox reaction can be solved by the following steps

1) Separating the process into half-reaction

2) Balancing the atoms and charge in each half-reaction

3) Make electron gain equivalent to electron lost

4) Add the half-reaction together

5) Simplify the equation

After completing all the steps, the correct option is (C)