Question

An aqueous solution of glucose is 10% (w/V). The volume in which 1 mole of glucose is dissolved, will be:

• A. 18 L
• B. 9 L
• C. 0.9 L
• D. 1.8 L

Answer 1

The correct option is D 1.8 L

$10$ $g$ glucose is present in $100$ $mL$ solution.

Moles of glucose $=\frac{10}{180}=\frac{1}{18}$

$Molarity=\frac{Molesofsolute}{Volume\left(Litres\right)}=\frac{1}{18\times 0.1}=\frac{5}{9}$ $M$

Let the volume required for $1$ $mole$ glucose solution be $V$

$⟹\frac{5}{9}\times V=1$

$⟹V=\frac{9}{5}$ $Litres=1.8$ $Litres$