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Sulphuric Acid

HF can be pre...

Question

$H F$ can be prepared by the action of $H_{2} S O_{4}$ on $N a F$ . Choose the correct statement(s) for action of $H_{2} S O_{4}$ on $N a B r$ .

H_{2} S O_{4}

cannot react with

N a B r

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H B r

cannot be prepared by the action of

H_{2} S O_{4}

N a B r

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H_{2} S O_{4}

oxidises

H B r

to form

B r_{2}

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S O_{2}

gas is evolved

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Solution

The correct options are
A $S O_{2}$ gas is evolved
B $H_{2} S O_{4}$ oxidises $H B r$ to form $B r_{2}$
C $H B r$ cannot be prepared by the action of $H_{2} S O_{4}$ on $N a B r$
$H B r$ cannot be prepared by the action of the $H_{2} S O_{4}$ on $N a B r$ . $H_{2} S O_{4}$ oxidises $H B r$ formed to $B r_{2}$ .
$2 H_{2} S O_{4} + 2 N a B r \to N a H S O_{4} + B r_{2} + S O_{2} + 2 H_{2} O$

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