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
Acidic
its acidic
acidic
acidic
Acidic
It is acidic
The solution is acidic.
acidic i think
acidic