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Dehydration of hydrates of halides of ca...

Dehydration of hydrates of halides of calcium, barium and strontium i.e., `CaCI_(2). 6H_(2)O, BaCI_(2).2H_(2)O, SrCI_(2).2H_(2)O`, can be achieved by heating. These become wet on keeping in air. Which of the following statements is correct about these halides?

A

Act as dehydrating agent

B

Can absorb moisture from air

C

Tendency to form hydrate decreases from calcium to barium

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
D
Chlorides of alkaline earth metals are hydrated salts. Due to their hygroscopic nature, they can be used as a dehydrating agent, to absorb moisture from air. Extent of hydration decreases from Mg to Ba i.e., `MgCI_(2).6H_(2), CaCI_(2).6H_(2)O BaCI_(2).2H_(2)O, SrCI_(2).2H_(2)O`
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