Question

Explain why HCL is a gas and HF is a liquid ?

Answer 1

Ans: Both HCl and HF are gases at room temperature. But HF has high boiling point than HCl because of the reason that in HF the strength of hydrogen bond is stronger than the strength of hydrogen bond in HCl.

Answer 2

Hi,

Here is your answer,

F is smaller and more electronegative then Cl, so it forms stronger H-bonds as compared to Cl. As the consequence, more energy is needed to break the H-bonds in HF then HCl and hence the boiling point of HF is higher than that of HCl.

That's why HF is liquid and HCl is a gas.


Hope it helps you !