Chemical Thermodynamics Question 357

Question: Hydrogen has an ionisation energy of $ 1311kJmo{{l}^{-1}} $ and for chlorine it is $ 1256kJmo{{l}^{-1}}. $ Hydrogen forms $ {{H}^{+}}( aq ) $ ions but chlorine does not form $ C{{l}^{+}}(aq) $ ions because

Options:

A) $ {{H}^{+}} $ has lower hydration enthalpy

B) $ C{{l}^{+}} $ has lower hydration enthalpy

C) $ Cl $ has high electron affinity

D) $ Cl $ has high electronegativity

Show Answer

Answer:

Correct Answer: B

Solution:

  • Hydration energy of $ C{{l}^{+}} $ is very less than $ {{H}^{+}} $ hence it doesn’t form $ C{{l}^{+}} $ (aq) ion.


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