Assertion : In electrolysis, the quantity of electricity needed for depositing 1 mole silver is different from that required for 1 mole of copper.
Reason : The molecular weights of silver and copper and different.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion .
B. If both assertion and reason are true but reason is not the correct explanation of assertion .
C. If assertion is true but reason is false .
D. If both assertion and reason are false .

Answer

B

Explanation

The amount of electricity required for oxidation or reduction depends on stoichiometry of the electrode reaction.
For silver , `(Ag_((aq))^(+) + e^(-) to Ag_((s)))` one mole of electron is required. For copper , `(Cu_((aq))^(2+) + 2e^(-) to Cu_((s)))` two moles of electrons are required .