The vapour pressure of water is 15.5 mm at 20 °C. The lowering of vapour pressure of 0.02 m K Br solution will be
A. 0.0112 mm Hg
B. 0.0056 mm Hg
C. 0.056 mm Hg
D. 0.31 mm Hg
Answer:A
The vapour pressure of water is 15.5 mm at 20 °C. The lowering of vapour pressure of 0.02 m K Br solution will be
A. 0.0112 mm Hg B. 0.0056 mm Hg C. 0.056 mm Hg D. 0.31 mm Hg