The drying agent used conventionally (conc $H_{2} S O_{4}$ ) can be replaced by quicklime & phosphorous pentoxide.

True

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False

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Solution

The correct option is B
False

Quicklime and Phosphorous pentoxide $P_{2} O_{5}$ cannot be used since they react with hydrogen chloride forming the respective chloride.

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

Sulphuric acid has a great affinity for water. It readily removes elements of water from other compounds, i.e., it acts as a dehydrating agent.

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Similar questions

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. Conc.

H_{2} S O_{4}

, anhydrous

C a {C l}_{2}

P_{4} O_{10}

cannot be used as drying agent for ammonia, why?

For ammonia, why is quicklime used as the drying agent?

Explain clearly how conc. $H_{2} S O_{4}$ is used as dehydrating as well as drying agent.

Phosphorous pentoxide and concentrated sulphuric acid can be classified as basic drying agents.

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The drying agent used conventionally (conc H2SO4) can be replaced by quicklime & phosphorous pentoxide.

The drying agent used conventionally (conc $H_{2} S O_{4}$ ) can be replaced by quicklime & phosphorous pentoxide.