Question

A solution is prepared by dissolving 5.64 g of glucose in 60 g of water. Calculate the molality of the solution.

• A. 0.281 m
• B. 1.21 m
• C. 1.044 m
• D. 0.522 m

Answer 1

Answer: (D)

0.522 m

M.W of glucose is 180

mole of glucose = $\frac{5.64}{180}$

molality = $\frac{\text{mole of solute(glucose)}}{\text{weight of solvent in Kg}}$

= $\frac{\frac{5.64}{180}}{0.060}$

$=0.52$

so the answer is D