Solutions And Colligative Properties
- Solutions and Colligative Properties - Result Question 1-1
- Solutions and Colligative Properties - Result Question 1
- Solutions and Colligative Properties - Result Question 2-1
- Solutions and Colligative Properties - Result Question 2
- Solutions and Colligative Properties - Result Question 3-1
- Solutions and Colligative Properties - Result Question 3
- Solutions and Colligative Properties - Result Question 4-1
- Solutions and Colligative Properties - Result Question 5-1
- Solutions and Colligative Properties - Result Question 5-2
- Solutions and Colligative Properties - Result Question 6-1
- Solutions and Colligative Properties - Result Question 5
- Solutions and Colligative Properties - Result Question 6
- Solutions and Colligative Properties - Result Question 7-1
- Solutions and Colligative Properties - Result Question 7
- Solutions and Colligative Properties - Result Question 8-1
- Solutions and Colligative Properties - Result Question 8
- Solutions and Colligative Properties - Result Question 10-1
- Solutions and Colligative Properties - Result Question 9-1
- Solutions and Colligative Properties - Result Question 9
- Solutions and Colligative Properties - Result Question 10
- Solutions and Colligative Properties - Result Question 11-1
- Solutions and Colligative Properties - Result Question 11
- Solutions and Colligative Properties - Result Question 12-1
- Solutions and Colligative Properties - Result Question 12
- Solutions and Colligative Properties - Result Question 13-1
- Solutions and Colligative Properties - Result Question 13
- Solutions and Colligative Properties - Result Question 14-1
- Solutions and Colligative Properties - Result Question 14
- Solutions and Colligative Properties - Result Question 15-1
- Solutions and Colligative Properties - Result Question 15
- Solutions and Colligative Properties - Result Question 16-1
- Solutions and Colligative Properties - Result Question 16
- Solutions and Colligative Properties - Result Question 17-1
- Solutions and Colligative Properties - Result Question 17
- Solutions and Colligative Properties - Result Question 18-1
- Solutions and Colligative Properties - Result Question 18-2
- Solutions and Colligative Properties - Result Question 18
- Solutions and Colligative Properties - Result Question 19-1
- Solutions and Colligative Properties - Result Question 20-1
- Solutions and Colligative Properties - Result Question 20
- Solutions and Colligative Properties - Result Question 21-1
- Solutions and Colligative Properties - Result Question 21
- Solutions and Colligative Properties - Result Question 22-1
- Solutions and Colligative Properties - Result Question 22
- Solutions and Colligative Properties - Result Question 23-1
- Solutions and Colligative Properties - Result Question 24-1
- Solutions and Colligative Properties - Result Question 24
- Solutions and Colligative Properties - Result Question 25 — JEE PYQ Chapterwise
- Solutions and Colligative Properties - Result Question 25-2
- Solutions and Colligative Properties - Result Question 25 — JEE PYQ Chapterwise
- Solutions and Colligative Properties - Result Question 26-1
- Solutions and Colligative Properties - Result Question 26
- Solutions and Colligative Properties - Result Question 27-1
- Solutions and Colligative Properties - Result Question 28-1
- Solutions and Colligative Properties - Result Question 28
- Solutions and Colligative Properties - Result Question 29-1
- Solutions and Colligative Properties - Result Question 29
- Solutions and Colligative Properties - Result Question 31
- Solutions and Colligative Properties - Result Question 39
- Solutions and Colligative Properties - Result Question 59
- Solutions and Colligative Properties - Result Question 60
- Solutions and Colligative Properties - Result Question 61
- Solutions and Colligative Properties - Result Question 62
- Solutions and Colligative Properties - Result Question 63
- Solutions and Colligative Properties - Result Question 64
- Solutions and Colligative Properties - Result Question 65
- Solutions and Colligative Properties - Result Question 66
- Solutions and Colligative Properties - Result Question 67
- Solutions and Colligative Properties - Result Question 69
Solutions and Colligative Properties - Result Question 18-2
18. When $20$ g of naphthoic acid $\left(\mathrm{C}_{11} \mathrm{H}_8 \mathrm{O}_2\right)$ is dissolved in $50$ g of benzene ( $K_f=1.72 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$ ), a freezing point depression of $2 $ K is observed. The van’t Hoff factor $(i)$ is
(2007, 3M)
(a) $0.5$
(b) $ 1$
(c) $ 2$
(d) $3$
Show Answer
Answer:
Correct Answer: 18. (a)
Solution:
$ \begin{aligned} & \text { Molality }=\left(\frac{20}{172}\right) \times \frac{1000}{50}=2.325 \mathrm{~m} \\ & \Rightarrow \quad-\Delta T_f=2=i K_f \cdot m \\ & \Rightarrow \quad i=\frac{2}{1.72 \times 2.325}=0.5 \\ \end{aligned} $
BETA
