If instead of `H_2SO_4`, `HCl` or `HNO_3` of suitable concentration were used, the volume of `KMnO_4` solution used would have been

Options

A. less in case of HCl but more in case of `HNO_3`
B. More in case of HCl but less in case of `HNO_3`
C. more in both cases
D. Less in both cases

Answer

b

Explanation

If HCl were used, the oxygen produced from `KMnO_4` will be partly used up for oxidation of HCl. Hence, HCl required will be more. If `HNO_3` were used, it itself acts as oxidising agent and will oxidise the reductant. Hence `KMnO_4` solution used will be less.