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12 ml of saturated solution .001gr of C...

12 ml of saturated solution .001gr of `CaCO_(3) were required in the titration of 100 ml of water to produce a good lether its degree of hardness is

A

100 ppm

B

120 ppm

C

60 ppm

D

80 ppm

Text Solution

Verified by Experts

The correct Answer is:
B
In 1 ml 0.001 g of `CaCO_3` is resent
12 mL = ` 12 xx 0.001 g = 0.012g`
hardness = `0.012/100 xx 10^6 = 120` ppm
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