Question

Dry air is first passed through a 0.1M $KCl$ in water & then through 6M $KCl$ solution. Which among the following statements is/are true :
(i) Dilute solution will show a loss in weight.
(ii) Dilute solution will show a gain in weight.
(iii) Change in weight of the dilute solution is proportional to its vapour pressure.
(iv) Concentrated solution will show a gain in weight.
(v) Change in weight of the concentrated solution is proportional to its vapour pressure.

• A. i
• B. ii
• C. iii
• D. iv
• E. v

Answer 1

Answer: (A), (C), (D), (E)

i
v
iii
iv

(i) The statements (i), (iii), (iv) and v are true. Dry air is first passed through a $0.1MKCl$ in water & then through $6MKCl$
solution.
(ii) Dilute solution will show a loss in weight.
(iii) Change in weight of the dilute solution is proportional to its vapour pressure.
(iv) Concentrated solution will show a gain in weight.
(v) Change in weight of the concentrated solution is proportional to its vapour pressure. The loss and gain in weight of dilute and concentrated solutions will continue till a point when both solutions have equal concentration.