Explain why o-hydroxybenzaldehyde is liquid at room temperature while p-hydroxybenzaldehyde is a high meltingsolid . or Why o-nirophenol is volatile in steam but p-nitrophenol is not ?

Explain why o-hydroxybenzaldehyde is liquid at room temperature while

1.	Explain why o-hydroxybenzaldehyde is liquid at room temperature while p-hydroxybenzaldehyde is a high meltingsolid . or Why o-nirophenol is volatile in steam but p-nitrophenol is not ?
Answer» Solution :In o-hydroxybenzalde , there is intrmolecular hydrogen bonding which further prevents ASSOCIATION of the molecular . In p-hydroxy BENZALDEHYDE, there is intermolecular hydrogen bonding and hence , there is association AMONG the moleculas . As a result , o-hydroxybenzaldehyde is a LIQUID whereas p-hydroxybenzaldehyde is a solid . Similarly, in CASE of nitrophenol , we have .