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Elevation in Boiling Point

A 0.2 molal a...

Question

A 0.2 molal aqueous solution of a weak acid (HX) is 20% ionised. The freezing point of this solution is (Given for water)

- 0.31° C

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- 0.45°C

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- 0.53°C

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- 0.90°C

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Solution

The correct option is B
- 0.45°C

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Similar questions

A 0.2 molal aqueous solution of a weak acid (HX) is 20% ionised. The freezing point of this solution is (Given for water)

0.5

20 %

K_{f}

1.86 {K kg mol}^{- 1}

0.2 m o l a l

H X

20 %

k_{f} = 1.86 k k g m o l e^{- 1}

0.2

H X

0.3

K_{f}

1.85

0.2

H X

20

K_{f} = 1.86 K m o l a l i t y^{- 1}

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