Question

Which of the following can exsist as a hexamer in vapour state ?
HF, CH3CHO , H20, C2H5OH

Answer 1

My Answer is C2H5OH is hexamer in vapour state.

Answer 2

Among the given molecules, HF exists as a hexamer in vapour state.

• Hydrogen Flouride (HF) is liquid at room temperature while exists as a gas at higher temperature.
• It is highly polymerised in vapour form. Six molecules of HF combine to give rise to (HF)6.
• It also exists in dimerised forms (HF)2 due to the hydrogen bonding interactions between the highly electronegative flourine atom of one molecule and the hydrogen of the other.