Dehydration of hydrates of halides of calcium,
Question:

Dehydration of hydrates of halides of calcium, barium and strontium i.e.,

CaCl26H2O, BaCl2.2H2O, SrCl2.2H2O, can be achieved by heating. These

become wet on keeping in air. Which of the following statements is correct

about these halides?

(i) act as dehydrating agent

(ii) can absorb moisture from the air

(iii) The tendency to form hydrate decreases from calcium to barium

(iv) All of the above

Solution:

Option (iv) All of the above is the answer.

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