83   g of ethylene glycol dissolved in 625   g of water. The freezing point of the solution is ...…

83 g of ethylene glycol dissolved in 625 g of water. The freezing point of the solution is ..... K. (Nearest integer)
[Use : Molal Freezing point depression constant of water =1.86 K kg mol-1
Freezing point of water =273 K
Atomic masses : C:12.0u,O:16.0u,H:1.0u]

Solution

ΔTf=iKf×m

=1×1.86×83×100062×625

ΔTf=3.984 K

So, freezing point of solution =273-3.984=269.016≃269 K

Asked in: JEE Main 2021 (26 Aug Shift 2)

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