QJEEM22Ch1d4b: JEE Main 2022 Chemistry - Class 11 JEEM22Ch1d4b Solution: 250   g solution of D -glucose in water contains 10.8 % of …

Question

Verified Solution • 2025–26 Session moderate

$250 g$ solution of $D$ -glucose in water contains $10.8 %$ of carbon by weight. The molality of the solution is nearest to

(Given: Atomic Weights are, $H, 1 u; C, 12 u; O, 16 u$ )

Accepted Answer

Weight of D-glucose in water

=250 \mathrm{~g}

\begin{aligned} ∴ Weight of carbon in D-glucose & = \frac{250}{180} \times 72 \\ = 100 g \end{aligned}

\%

of carbon in the aqueous solution of glucose is

=10.8 \%

\therefore

Weight of the solution is

=925.93

\begin{aligned} ∴ Molality of D-glucose is & = \frac{\frac{250}{180}}{(925.93 - 250)} \times 1000 \\ = \frac{250}{180 \times 675.93} \times 1000 \\ = 2.06 \end{aligned}

QJEEM22Ch1d4b: JEE Main 2022 Chemistry - Class 11 JEEM22Ch1d4b Solution: 250 &nbsp; g solution of D -glucose in water contains 10.8 % of …