The stability of cu2+ is more than cu+ salts in aqueous solution due to [2023]

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Chemistry

Q.
The stability of ${Cu}^{2 +}$ is more than ${Cu}^{+}$ salts in aqueous solution due to [2023]

1 hydration energy

2 second ionisation enthalpy

3 first ionisation enthalpy

4 enthalpy of atomization

Ans.
(1)

The stability of ${Cu}_{(a q)}^{2 +}$ rather than ${Cu}_{(a q)}^{+}$ is due to the much more negative $Δ_{hyd} H °$ of ${Cu}_{(a q)}^{2 +}$ than ${Cu}_{(a q)}^{+}$ , which more than compensates for the second ionisation enthalpy of Cu.

Solution

Q.
The stability of ${Cu}^{2 +}$ is more than ${Cu}^{+}$ salts in aqueous solution due to [2023]

1 hydration energy

2 second ionisation enthalpy

3 first ionisation enthalpy

4 enthalpy of atomization

Ans.
(1)

The stability of ${Cu}_{(a q)}^{2 +}$ rather than ${Cu}_{(a q)}^{+}$ is due to the much more negative $Δ_{hyd} H °$ of ${Cu}_{(a q)}^{2 +}$ than ${Cu}_{(a q)}^{+}$ , which more than compensates for the second ionisation enthalpy of Cu.

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Solution

Q. The stability of Cu2+ is more than Cu+ salts in aqueous solution due to [2023]

1 hydration energy

2 second ionisation enthalpy

3 first ionisation enthalpy

4 enthalpy of atomization

Ans. (1) The stability of Cu(aq)2+ rather than Cu(aq)+ is due to the much more negative ΔhydH° of Cu(aq)2+ than Cu(aq)+, which more than compensates for the second ionisation enthalpy of Cu.

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Q.
The stability of ${Cu}^{2 +}$ is more than ${Cu}^{+}$ salts in aqueous solution due to [2023]

Ans.
(1)

The stability of ${Cu}_{(a q)}^{2 +}$ rather than ${Cu}_{(a q)}^{+}$ is due to the much more negative $Δ_{hyd} H °$ of ${Cu}_{(a q)}^{2 +}$ than ${Cu}_{(a q)}^{+}$ , which more than compensates for the second ionisation enthalpy of Cu.