2 moles of non-volatile solute is added to 1 k g water at - 8 ° C . K f of water is 2 K kg m o l - 1 . Mass of ice that separates out is (Ignoring the effect of change in volume)

Question

2 moles of non-volatile solute is added to 1 k g water at - 8 ° C . K f of water is 2 K kg m o l - 1 . Mass of ice that separates out is (Ignoring the effect of change in volume), 250 g, 500 g, 750 g, 100 g

MARKS App · Accepted Answer

For no freezing to take place at - 8 ° C , 4 m o l e s solute should be added to 1 k g water but, since 2 m o l e solute only is available it can stop the freezing of 500 g water only. 500 g ice is formed.

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