SATHEE: sblock Elements - Result Question 28

sblock Elements - Result Question 28

####38. The temporary hardness of water is due to calcium bicarbonate can be removed by adding

(a) $C a C O_{3}$

(b) $C a (O H)_{2}$

(c) $C a C l_{2}$

(d) $H C l$

$(1979, 1 M)$

Show Answer

Answer:

Correct Answer: 38. (b)

Solution:

Lime treatment remove bicarbonate hardness by forming insoluble $C a C O_{3}$ as

$C a {(H C O_{3})}_{2} + C a (O H)_{2} ⟶ 2 C a C O_{3} ↓ + 2 H_{2} O$

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