JEE PYQ: Solutions And Colligative Properties Question 30
Question 30 - 2019 (09 Apr Shift 2)
Molal depression constant for a solvent is 4.0 K kg mol$^{-1}$. The depression in the freezing point for 0.03 mol kg$^{-1}$ solution $\text{K}_2\text{SO}_4$ is:
(1). (0.18 K)
(2). (0.24 K)
(3). (0.12 K)
(4). (0.36 K)
Show Answer
Answer: (4)
Solution
$i = 3$. $\Delta T_f = 3 \times 4 \times 0.03 = 0.36$ K.