Question

3. Hydrogen fluoride is a liquid, while hydrogen chloride is a gas. Why?
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Answer 1

Answer:

The compound hydrogen chloridehas the chemical formula HCl and as such is a hydrogen halide. At room temperature, it is a colourlessgas, which forms white fumes ofhydrochloric acid upon contact with atmospheric water vapor.

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Answer 2

Answer:

Explanation:

HF has better intermolecular hydrogen bonding and better bonding means molecules are close to each other and close to each other means it's tendency is this :-

Solid>liquid>gas.

Hence it forms liquid.

HCl has bad hydrogen bonding compared to HF.

Why bad hydrogen bonding?

In HF hydrogen and fluorine are both small.

In HCl hydrogen is small but Chlorine is big.

Hence the bonding is bad.

Not bad actually but compared to HF it is.