Chemistry - CHEMICAL BONDING Question with Solution | TestHub

Copper (I) compounds are unstable in aqueous solution and undergo disproportio-nation. $2{\mathrm{Cu}}^{+}\to {\mathrm{Cu}}^{2+}+\mathrm{Cu}$ The greater stability of ${\mathrm{Cu}}^{2+}{}_{(aq.)}$ than ${\mathrm{Cu}}^{+}{}_{(aq.)}$ is due to much more $-ve{\Delta }_{hyd}H$ of ${\mathrm{Cu}}^{2+}{}_{(aq.)}$ than ${\mathrm{Cu}}_{(aq.)}^{+}$, which compensates for the second ionisation enthalpy of $\mathrm{Cu}$.