Solutions 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 . The molecular mass of A is ______ g. (Neare

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Solution

Q.
Solutions 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) [2023]

Ans.
(240)

$For isotonic solutions$

$π_{1} = π_{2}$

$C_{1} = C_{2} (For non-electrolyte)$

$(\frac{12}{M_{A} \times 1}) = 0.05$

$M_{A} = 240$

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