Morphine is Amphoteic ie.,it has (approximately) equal share of acidity and basicity.
The Phenolic moiety of ring A showers acidic natire and the tertiary Nitrogen containing a lone pair of electrons showers the basicity to the compound.
The Pka is about 8 .Some authors sat its a weak base but most prominantly it can be looked upon as an Amphoteric substance.
Regards!
acidic.
basic or acidic
acidic
its acidic
Acidic
Acidic
acidic
acidic
acidic i think
It is acidic
Acidic
acidic