Assertion : Copper metal gets readily corroded in acidic aqueous solution. Reason : Free energy change for…
Assertion : Copper metal gets readily corroded in acidic aqueous solution.
Reason : Free energy change for this process is negative.
both assertion and reason are true and reason is the correct explanation of assertion.
both assertion and reason are true but reason is not the correct explanation of assertion.
assertion is true but reason is false.
both assertion and reason are false.
Solution
Non-oxidising acids $\left(\mathrm{HCl}\right.$ and dil. $\left.\mathrm{H}_2 \mathrm{SO}_4\right)$ do not have any effect on copper. However they dissolve the metal in presence of air. As it is a nonspontaneous process so, $\Delta G$ can not be $-\mathrm{ve}$.