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The boiling point of a water containing ...

The boiling point of a water containing non-valatile solute is `101.04 ^(@)C` of 2 molal solution, the ebullioscopic constant of water is

A

0.52 K . Kg `"mol"^(-1)`

B

1.04 K . Kg `"mol"^_1)`

C

10.4K . Kg `"mol"^(-1)`

D

5.2 k . Kg `"mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`T = 101.04^(@) C = 374.04 K`
`T^(@) = 100^(@)C = 373 K, m=2 "molal"`
`:. Delta T_(b) = K_(b) xx m`
`K_(b) = (Delta T_(b))/m = (374.04-373)/2=1.01/2=0.52` K. Kg `"mol"^(-1)`
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