Is the desiccant lime or slaked lime?Why can't ammonia be dried with concentrated sulphuric acid?
Ammonia gas is an alkaline gas. When it meets the acid sulfuric acid, it will react with each other to produce ammonium sulfate, which can reduce the amount of ammonia greatly. So, it can not be dried with concentrated sulfuric acid
A drying agent is a lime. It can hydrate with hydrated lime and can dry. And slaked lime has no effect. It does not react with water
