Assertion : If standard reduction potential for the reaction $\mathrm{Ag}^{+}+e^{-} \rightarrow \mathrm{Ag}$ is 0.80 volt, then for the reaction $2 \mathrm{Ag}^{+}+2 e^{-} \rightarrow 2 \mathrm{Ag}$, it will be 1.60 volt. Reason: If concentration of $\mathrm{Ag}^{+}$ions is doubled, the standard electrode potential is also doubled.

• 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.
• Correct answer
  D

  If both assertion and reason are false.

Hence, the correct answer is option: 'D'.