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Sulphuric Acid

A is a colorl...

Question

(A) is a colorless solid; it melts when heated and gives off a colorless gas (B) which is a supporter of combustion. If heating is continued, the whole of the solid disappears. When (A) is heated with an aqueous $N a O H$ solution, an alkaline gas (C) is evolved. When gas (B) is heated with sodamine, a colorless solid (D) is formed. When (D) is heated with $d i l . H_{2} S O_{4}$ , a colorless liquid (E) is formed.

The compound C has:

A

linear geometry

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B

pyramidal

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C

tetrahedral

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D

none of these

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Solution

The correct option is A pyramidal
(A) is $N H_{4} N O_{3}$ , reactions are
(i) $\begin{matrix} N H_{4} N O_{3} & ⟶ & N_{2} O & + & 2 H_{2} O (A) & (B) \end{matrix}$
$N_{2} O + M g ⟶ M g O + N_{2}$
(ii) $\begin{matrix} N H_{4} N O_{3} & + & N a O H & h e a t - - \to & N H_{3} ↑ & + & N a N O_{3} & + & H_{2} O (C) \end{matrix}$ .
(iii) $\begin{matrix} N_{2} O & + & N a N H_{2} & ⟶ & N a N_{3} & + & H_{2} O (B) & S o d . a z i d e (D) \end{matrix}$
$\begin{matrix} N a N_{3} & + & H_{2} S O_{4} & ⟶ & N a H S O_{4} & + & H N_{3} (E) h y d r a z o i c a c i d \end{matrix}$
$P b (N_{3})_{2}, A g N_{3} (a z i d e s)$ are explosive.

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