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NEET UG CHEMISTRY MCQ: SOLUTIONS

1 Hard

1 of 1

Analyzing +4 | -1

\Delta T_f / K_f

has the same value of

1 \mathrm{~mol} \mathrm{~kg}^{-1}

for

8 \%

A B_2

and

10 \% A_2 B

by mass of solvent, both

A B_2

and

A_2 B

being non- electrolytes. Atomic masses of

A

and

B

will be respectively

View answer and explanation

Correct option: C

40,20

Option C is correct. By setting up equations based on the given information about

\Delta T_f / K_f

and solving for the atomic masses of A and B, we find that A = 40 and B = 20.

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