AP EAPCET 2021 - 20th August Evening Shift | Liquid Solution Question 43 | Chemistry

The vapour pressure of a solvent decreased by 20 mm of Hg when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.5. What should be the mole fraction of the solvent for the decrease in the vapour pressure needs to be 10 mm of Hg?

$$\frac{3}{4}$$

$$\frac{2}{3}$$

$$\frac{1}{4}$$

$$\frac{3}{2}$$

AP EAPCET 2021 - 20th August Morning Shift

MCQ (Single Correct Answer)

-0

If the $$K_{\mathrm{H}}$$ values for $$\operatorname{Ar}(g), \mathrm{CO}_2(g), \mathrm{HCHO}(g)$$ and $$\mathrm{CH}_4(\mathrm{~g})$$ respectively are $$40.39,1.67, 1.83 \times 10^{-5}$$ and $$0.413$$ , then identify the correct increasing order of their solubilities.

$$\mathrm{HCHO} < \mathrm{CH}_4 < \mathrm{CO}_2 < \mathrm{Ar}$$

$$\mathrm{HCHO} < \mathrm{CO}_2 < \mathrm{CH}_4 < \mathrm{Ar}$$

$$\mathrm{Ar} < \mathrm{CO}_2 < \mathrm{HCHO} < \mathrm{CH}_4$$

$$\mathrm{Ar} < \mathrm{CO}_2 < \mathrm{CH}_4 < \mathrm{HCHO}$$

AP EAPCET 2021 - 20th August Morning Shift

MCQ (Single Correct Answer)

-0

If 500 mL of CaCl$$_2$$ solution contains 3.01 $$\times$$ 10$$^{22}$$ chloride ions, molarity of the solution will be

0.05 M

0.01 M

0.1 M

0.02 M

AP EAPCET 2021 - 19th August Evening Shift

MCQ (Single Correct Answer)

-0

Which condition is not satisfied by an ideal solution?

Both $$\Delta_{\text {mix }} H=0$$ and $$\Delta_{\text {mix }} S=0$$

Obeyance on Raoult's law

Both $$\Delta_{\text {mix }} H=0$$ and $$\Delta_{\text {mix }} V=0$$

$$\Delta_{\text {mix }} H=0$$

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