The stability of Cu ^{2+} is more than Cu ^{+ | vedclass

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Question

The stability of $Cu ^{2 +}( aq )$ is more than $Cu ^+ ( aq )$ is due to the much more negative $\Delta_{	ext {hyd }} H^{\circ}$ of $Cu ^{2+}( aq )$

Vedclass · Accepted Answer

hydration energy.

Vedclass · Answer

The stability of $Cu ^{2 +}( aq )$ is more than $Cu ^+ ( aq )$ is due to the much more negative $\Delta_{	ext {hyd }} H^{\circ}$ of $Cu ^{2+}( aq )$ than $Cu ^{+}( aq )$, which more than compensates for second ionisation enthalpy of $Cu$.

$\Delta 	ext { hyd } H ^{\circ} 	ext { of } Cu ^{2+}( aq )=-2121\,kJ\,mol ^{-1}$

$\Delta_{ i } H _1^0$ of $Cu =+745\,kJ\,mol ^{-1}$

$\Delta_{ i } H_2^{\circ} 	ext { of } Cu =+1960\,kJ\,mol ^{-1}$

The stability of $Cu ^{2+}$ is more than $Cu ^{+}$salts in aqueous solution due to -

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