A Level Chemistry - Drying Agent vs Dehydrating AgentWatch
What is the difference between a Drying agent such as CaCl2 and a Dehydrating Agent such as H2SO4?
I've heard that H2SO4 can be used in Esterification reactions to increase yield, but does it act as a drying agent to remove water, hence push equilibrium to RHS, whilst also acting as a catalyst in supplying H+ ions?
Hence, does CaCl2 not also remove water impurities in a seperating funnel of when you practically do the Esterifcation exp? -- - why is this known as a drying agent whereas H2SO4 is known as a dehydrating agent?
For example MgCl2 + 4H2O ---> MgCl2.4H2O
Dehydrating agents like sulphuric acid remove water during a chemical synthesis or reaction.
For example Hydrated copper(II) sulfate has the formula CuSO4. 5H2O. The addition of concentrated sulfuric acid removes the water of crystallisation to produce anhydrous copper(II) sulfate.