Solution of 12 g of non-electrolyte (A) prepared by dissolving it in 1000 mL of water exerts the same osmotic pressure as that of 0 . 05 M glucose solution at the same temperature. The empirical formu

Question

Solution of 12 g of non-electrolyte (A) prepared by dissolving it in 1000 mL of water exerts the same osmotic pressure as that of 0 . 05 M glucose solution at the same temperature. The empirical formula of A is CH 2 O . The molecular mass of A is ________g . (Nearest integer)

TestHub · Accepted Answer

The pressure which applied externally in the solution side to prevent the osmosis process is known as osmotic pressure. It can be denoted by $π$ .

Since, $(π_{1})_{non electrolyte} = (π_{2})_{glucose}$
$C_{1} RT = C_{2} RT$
$\frac{W_{1}}{M_{1}} = \frac{W_{2}}{M_{2}}$

Empirical mass of
$\frac{12}{M_{1}} = 0.05$
$M_{1} = \frac{12}{0.05} = 240$

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