Which reaction is not feasible?

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$HC \equiv CH + Li ⟶ {Li}^{+} \bar{C} \equiv \bar{C} {Li}^{+} + H_{2}$

$4 {NaNO}_{3} \overset{4}{⟶} 2 {Na}_{2} O + 4 {NO}_{2} + O_{2}$

$LiCl + 2 H_{2} O ⟶ LiCl \cdot 2 H_{2} O$

${MgCl}_{2} + 6 H_{2} O ⟶ {MgCl}_{2} \cdot 6 H_{2} O$

answer is A, B.

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Detailed Solution

The given reactions are not feasible,

(a) Li does not form ethynide.

Because It is challenging to remove the outermost electron from lithium because of its extremely small size, high polarizing strength, and consequently high ionization energy.

Since ethynyl and lithium do not react to form ethynide, lithium is the only alkali metal that does not.

(b) $2 {NaNO}_{3} \overset{Δ}{⟶} 2 {NaNO}_{2} + O_{2}$

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