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  • 4L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molality of the resultant solution is _____________. (i) 0.004

4L of 0.02 M aqueous solution of NaCl was diluted by adding one litre of water. The molality of the resultant solution is _____________.

(i) 0.004

(ii) 0.008

(iii) 0.012

(iv) 0.016

Answers (1)

The answer is the option (iv)


M=\frac{n}{}V=0.02 =\frac{n}{4} \;or\; n=0.08

M= \frac{n}{ \text{(Mass of water in Kg)} }= \frac{0.08}{}5 =0.016

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