What will be the molality of a solution of glucose in water which is $$10\% \,\,w/W?$$
A.
0.01$$\,m$$
B.
0.617$$\,m$$
C.
0.668$$\,m$$
D.
1.623$$\,m$$
Answer :
0.617$$\,m$$
Solution :
$$10\,g$$ of glucose is present in $$100\,g$$ of solution Mass of $${H_2}O = 100 - 10 = 90\,g$$
Molality $$ = \frac{{10}}{{180}} \times \frac{{1000}}{{90}}$$
$$ = 0.617\,m$$
Releted MCQ Question on Physical Chemistry >> Solutions
Releted Question 1
An azeotropic solution of two liquids has boiling point lower than either of them when it