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  • Which one of the following concept describes the strongest reducing nature of Li in aqueous solution ?Option: 1 Electron gain enthalpy<

Which one of the following concept describes the strongest reducing nature of Li in aqueous solution ?

Option: 1

Electron gain enthalpy


Option: 2

Ionisation enthalpy


Option: 3

Sublimation enthalpy


Option: 4

Hydration enthalpy


Answers (1)

best_answer

As we learnt , 

 

Reducing nature of alkali metals -

Strong reducing agent. Increases down the group except for Li which is the strongest reducing agent

- wherein

Standard electrode potential measuring reducing power

M (S)\rightarrow M(g) sublimation enthalpy

M (g)\rightarrow M^{+} (g) + e^{-} ionisation\ ethalpy\\ M^{+}(g) + H{_{2}}O\rightarrow M^{+}(aq.) hydration\ ethalpy

 

 Due to small size of Li+ , its hydration enthalpy is the highest and hence Li is the strongest reducing agent.

Therefore, option (4) is correct.

 

Posted by

Kuldeep Maurya

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