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Question

The density of 1 M solution of NaCl is 1.0585gml1. The molality of the solution is :

A
1.0585
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B
1.00
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C
0.10
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D
0.0585
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Solution

The correct option is C 1.00
The relation between density and molality is given by-

d=M(MW1000+1m)1.0585=1(58.51000+1m)
m=1

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