In the laboratory preparation of $H C l$ gas, the drying agent used conventionally (conc. $H_{2} S O_{4}$ ) can be replaced by quicklime & phosphorous pentoxide.

Q. Ethanol when reacted with

P {C l}_{5}

gives,

A

P O {C l}_{3}

and

H C l

A

reacts with silver nitrate to form

B

(major product) and

A g C l

A

and

B

respectively are:

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When phosphorous pentoxide is reacted with HCl gas, products are:

The correct options are A POCl3 D HPO3Phosphorous pentoxide reacts with HCl to form Phosphorous Oxychloride and metaphosphoric acid.2P2O5+3HCl→POCl3+3HPO3Hence, POCl3 and HPO3 are correct.

When phosphorous pentoxide is reacted with $H C l$ gas, products are:

The correct options are
A $P O C l_{3}$
D $H P O_{3}$
Phosphorous pentoxide reacts with $H C l$ to form Phosphorous Oxychloride and metaphosphoric acid.

$2 P_{2} O_{5} + 3 H C l \to P O C l_{3} + 3 H P O_{3}$

Hence, $P O C l_{3}$ and $H P O_{3}$ are correct.