Dehydration of hydrates of halides of calcium, barium and strontium i.e., $C a C l_{2} . 6 H_{2} O, B a C l_{2} .2 H_{2} O, S r C l_{2} . 2 H_{2} O,$
can be achieved by heating these become wet on keeping in the air. Which of the following statements. Is correct about these halides?
(a) Act as dehydrating agent
(b) Can absorb mositure from air
(c) Tendency to form hydrate decrease from calcium to barium
(d) All of the above

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Solution

Answer: (d) All of the above.

Chlorides of alkaline earth metals are hydrates 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., $M g C l_{2} . 6 H_{2} O, C a C l_{2} . 6 H_{2} O, B a C l_{2} . 2 H_{2} O, S r C l_{2} . 2 H_{2} O$

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Similar questions

C a C l_{2} .6 H_{2} O, B a C l_{2} .2 H_{2} O, S r C l_{2} .2 H_{2} O

Halides of alkaline earth metals form hydrates such as MgCl₂.6H₂O,CaCl₂.6H₂O, BaCl₂.2H₂O and SrCl₂.2H₂O. This shows that halides of group 2 elements

M g C l_{2} .6 H_{2} O

C a C l_{2} .6 H_{2} O

B a C l_{2} .2 H_{2} O

S r C l_{2} .2 H_{2} O

M g (O H)_{2}

B a (O H)_{2}

C a, S r

B a

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