Q: What is the difference between water absorbent and dehydrating agents?

Question: What is the difference between water absorbent and dehydrating agents?

Answer:Water absorbing agents absorb water molecules, such as calcium oxide and phosphorus pentoxide.

Common water absorbing agents:Anhydrous calcium chloride, sodium hydroxide, potassium hydroxide, anhydrous magnesium sulfate, anhydrous sodium sulfate, anhydrous copper sulfate, calcium oxide, elemental sodium, concentrated sulfuric acid, concentrated phosphoric acid.

Dehydrating agents can not only absorb water molecules, but also detach the hydrogen and oxygen elements contained in substances in a 2:1 ratio, such as concentrated sulfuric acid. Water absorbing agents do not have this ability.

        Common dehydrating agents:Concentrated sulfuric acid, concentrated phosphoric acid, fuming sulfuric acid, phosphorus pentoxide, sulfur trioxide, phosphorus oxychloride, sulfoxide chloride, calcium oxide