A non-volatile solute, 'A' tetramerises in water to the extent of 80 %. ( 2.5 ~g ) of 'A' in ( 100 ~g ) of water, lowers the freezing point by ( 0.3^ C ). the molar mass of ( A ) in ( g mol ⁻¹ ) is (Kf for water ( = ) ( 1.86 ~K ~kg ~mol ⁻¹

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A non-volatile solute, 'A' tetramerises in water to the extent of 80 %. ( 2.5 ~g ) of 'A' in ( 100 ~g ) of water, lowers the freezing point by ( 0.3^ C ). the molar mass of ( A ) in ( g mol ⁻¹ ) is (Kf for water ( = ) ( 1.86 ~K ~kg ~mol ⁻¹ ) )

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Correct answer: C. ( 62 )

( (C) ) [ array l = 80 100 =0.8 = 1-i 1- 1 n = 1-i 1- 1 4 0.8= 1-i 3 4 T_ f =0.3 T_ f = i K_ f W, 1000 M₂ 100 M₂= 0.4 1.86 2.5 10 0.3 M₂=62 ~g m o l⁻¹ array ]

A non-volatile solute, 'A' tetramerises in water to the extent of 80 %. ( 2.5 ~g ) of 'A' in ( 100 ~g ) of water, lowers the freezing point by ( 0.3^ C ). the molar mass of ( A ) in ( g mol ⁻¹ ) is (Kf for water ( = ) ( 1.86 ~K ~kg ~mol ⁻¹ ) )

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