In laboratory preparation of hydrogen, impurities of arsine and phosphine can be removed by passing it through which of the following solution?

Caustic Potash Solution

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Lead Nitrate Solution

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Silver Nitrate Solution

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Dry gas

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Solution

The correct option is C
Silver Nitrate Solution

Arsine $A s H_{3}$ and Phosphine $P H_{3}$ can be removed from passing it through silver nitrate solution.

$A s H_{3} +$ $6 A g N O_{3}$ $\to$ $A g_{3} A S$ + $3 A g N O_{3}$ + $3 H N O_{3}$

$P H_{3}$ + $6 A g N O_{3}$ $\to$ $A g_{3} P$ + $3 A g N O_{3}$ + $3 H N O_{3}$

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