What is the mass ratio of ethylene |Mole ConceptJEEMain2023

JEE MAIN 2023

25-1-23 {S2}

Question

What is the mass ratio of ethylene glycol (C2H6O2, molar mass = 62 g/mol) required for making 500 g of 0.25 molal aqueous solution and 250 mL of 0.25 molar aqueous solution ?

Select the correct option:

1 : 1

3 : 1

2 : 1

1 : 2

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Sol. Assume : Mass of solvent $\approx$ Mass of solution Case I: $\quad 0.25=\frac{W_1}{62} \times \frac{1000}{500}$ Case II: $\quad 0.25=\frac{\mathrm{W}_2}{62} \times \frac{1000}{250}$ $$ \frac{W_1}{W_2}=\frac{2}{1} $$

Question Tags

JEE Main

Chemistry

Medium

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