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Hardness of Water:Causes, Types and Treatments

Which of the ...

Question

Which of the following is used as desiccant for absorbing water in Leibigs method for estimation of C and H?

M g S O_{4} .7 H_{2} O

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C u S O_{4} .5 H_{2} O

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A n h y d r o u s

C a C l_{2}

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K O H

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Solution

The correct option is A $A n h y d r o u s$ $C a C l_{2}$
Dessicant absorbs $H_{2} O$ . So $H_{2} O$ vapours are absorbed in anhydrous $C a C l_{2}$ .

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Similar questions

C a C l_{2}

K_{P} = 6.4 \times 10^{85}

C a C l_{2} (s) + 6 H_{2} O (g) ⇌ C a C l_{2} . 6 H_{2} O (s) .

C a C l_{2} (s) ?

Give reasons for the following :

(a) Sodium hydrogen sulphate is not an acid but it dissolves in water to give hydrogen ions, according to the equation

$N a H S O_{4} ⇌ H^{+} + N a^{+} S O_{4}^{2 -}$

(b) Anhydrous calcium chloride is used in a desiccator.

C u S O_{4} .5 H_{2} O

M g S O_{4} .7 H_{2} O

5.0

3

C u S O_{4} .5 H_{2} O

C a C l_{2}

K_{p} = 6.4 \times 10^{8} 5

C a C l_{2} (s) + 6 H_{2} O (g) ⇌ C a C l_{2} .6 H_{2} O (s) .

C a C l_{2} (s)

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