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  • The case of adsorption of the hydrated alkali metals ions on an ion. exchange resins follows the coder -  Option: 1 <img alt="\mathrm{Li}

The case of adsorption of the hydrated alkali metals ions on an ion. exchange resins follows the coder -
 

Option: 1

\mathrm{Li}^{+}>\mathrm{K}^{+}>\mathrm{Na}^{+}
 


Option: 2

\mathrm{Rb}^{+}<\mathrm{k}^{+}<\mathrm{Li}^{-+}
 


Option: 3

\mathrm{K}^{+}>\mathrm{Na}^{+}>\mathrm{Rb}^{+}
 


Option: 4

\mathrm{Cs}^{+}>\mathrm{Rb}^{+}>\mathrm{K}^{+}


Answers (1)

best_answer

The orders of decreasing hydration enthalpy of alkali metal ion is -
\mathrm{Li}^{+}>\mathrm{Na}^{+}>\mathrm{K}^{+}>\mathrm{Rb}^{+}
Thus, ease of adsorption of hydrated ions is in orders:-
\mathrm{Rb^{+}}< \mathrm{K}^{+}<\mathrm{Na}^{+}< \mathrm{ L^{+}}
Hence Option 2 is correct.

Posted by

Sanket Gandhi

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