MHT CET 2023 13th May Morning Shift | Liquid Solution Question 12 | Chemistry

A solution of $$5.6 \mathrm{~g}$$ non-volatile solute in $$50 \mathrm{~g}$$ solvent has elevation in boiling point $$1.75 \mathrm{~K}$$. What is the molar mass of solute $$\left(\mathrm{K}_{\mathrm{b}}=3 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)$$ ?

$$192 \mathrm{~g} \mathrm{~mol}^{-1}$$

$$200 \mathrm{~g} \mathrm{~mol}^{-1}$$

$$184 \mathrm{~g} \mathrm{~mol}^{-1}$$

$$176 \mathrm{~g} \mathrm{~mol}^{-1}$$

MHT CET 2023 13th May Morning Shift

MCQ (Single Correct Answer)

-0

What is the molal elevation constant if one gram mole of a nonvolatile solute is dissolved in $$1 \mathrm{~kg}$$ of ethyl acetate? $$\left(\Delta \mathrm{T}_{\mathrm{b}}=x \mathrm{~K}\right)$$

$$x \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$

$$\frac{x}{2} \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$

$$2 x \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$

$$3 x \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$$

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

If $$0.15 \mathrm{~m}$$ aqueous solution of KCI freezes at $$-0.511^{\circ} \mathrm{C}$$, calculate van't Hoff factor of KCI (cryoscopic constant of water is $$1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1})$$

1.45

1.26

1.82

3.00

MHT CET 2023 12th May Evening Shift

MCQ (Single Correct Answer)

-0

What is the solubility of gas in water at $$25^{\circ} \mathrm{C}$$ if partial pressure is 0.346 bar [Henry's law constant is $$[0.159 \mathrm{~mol} \mathrm{~dm}^{-3} \mathrm{~bar}^{-1}]$$ ?

$$0.055 \mathrm{~mol} \mathrm{~dm}^{-3}$$

$$0.028 \mathrm{~mol} \mathrm{~dm}^{-3}$$

$$0.083 \mathrm{~mol} \mathrm{~dm}^{-3}$$

$$0.11 \mathrm{~mol} \mathrm{~dm}^{-3}$$

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