1.80 ~g of solute A was dissolved in 62.5 ~cm³ of ethanol and freezing point of the solution was found to be 155.1 ~K. The molar mass of solute A is _ _ _ _ g mol⁻¹. [Given: Freezing point of ethanol is 156.0 K. Density of ethanol is 0.80 g cm⁻³. Freezing point depression constant of ethanol is 2.00 K kg mol⁻¹]

Solutions: JEE Main 2022 Chemistry question

JEE Main 2022 · 29 Jul, Evening shift · Q15

JEE Main 202229 Jul, Evening shiftChemistryHardSolutions71× since 2002

1.80 \mathrm{~g}

of solute A was dissolved in

62.5 \mathrm{~cm}^{3}

of ethanol and freezing point of the solution was found to be

155.1 \mathrm{~K}

. The molar mass of solute A is ________ g

\mathrm{mol}^{-1}

. [Given : Freezing point of ethanol is 156.0 K. Density of ethanol is 0.80 g cm^

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3. Freezing point depression constant of ethanol is 2.00 K kg mol^

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Your answerType your answer. Integers and decimals are accepted.