Q.

Dehydration of hydrates of halides of calcium, barium and strontium i.e., CaCl2.6H2O, BaCl2. 2H2O, SrCl2.6H2O, can be achieved by heating. These become wet on keeping in air. Which of the following statements is correct about these halides?

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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

answer is D.

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Detailed Solution

→ The compounds which removes  water are called dehydrating agent.→ They can absorb  moisture from air calcium chloride to barium  chloride as size of cation increases
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