Single Choice

The density of $$1$$ M solution of $$NaCl$$ is $$1.0585\:g\:ml^{-1}$$. The molality of the solution is :

A$$1.0585$$
B$$1.00$$
Correct Answer
C$$0.10$$
D$$0.0585$$

Solution

The relation between density and molality is given by- $$d=M\left (\dfrac {MW}{1000}+\dfrac {1}{m}\right )\Rightarrow 1.0585=1\left (\dfrac {58.5}{1000}+\dfrac {1}{m}\right )$$ $$\therefore m=1$$

SIMILAR QUESTIONS

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