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The density of 10.0% by mass KCl solutio...

The density of 10.0% by mass KCl solution in water is `1.06 g cm^(-3)` . Its molarity is

A

1.489 M

B

1.420 M

C

`1.420 mol kg^(-1)`

D

`1.489 mol kg^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Mass of 1 litre solution `= 1000 xx 1.06 = 1060 g`
Amount of KCl in solution `= 1060 xx = 10/100 =106 g`
Molarity `=106/74.5 xx 1000/1000 = 1.42 M`
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