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2 \mathrm{~g} of a non-volatile non-electrolyte solute is disolved in 200 \mathrm{~g} of two different solvents A and B whose ebullioscopic constants are in the ratio of 1: 8. The elevation in boiling points ofA$ and $\mathrm{B} are in the ratio  \frac{x}{y}(x: y). The value of y is_________. (Nearest Integer)

Option: 1

8


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Given

\mathrm{\frac{\left(K_b\right)_{A}}{\left(K_b\right)_{B}}=\frac{1}{8}}

We know,

 \mathrm{\Delta T_b=K_b\; m}

\mathrm{\frac{(\Delta T_b)_{A}}{(\Delta T_ b)_{B}}=\frac{(K_ b)_{A} m}{(K_ b)_{B} m}=\frac{1}{8}=\frac{x}{y}}

\mathrm{\frac{x}{y}=\frac{1}{8}, \quad y=8}

Hence, the answer is 8

Posted by

Pankaj Sanodiya

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