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What will be the freezing point of a 0....

What will be the freezing point of a 0.5 m KCl solution ? The molal freezing point constant of water is `1.86^@C m^(-1)` .

A

`-1.86^@C`

B

`-0.372^@C`

C

`-3.2^@C`

D

`0^@C`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaT_f=iK_fxxm=2xx1.86xx0.5=1.86^@C`
`T_f=T_f^@-DeltaT_f=0-1.86=-1.86^@C`
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