Question

Q: While calculating vapor pressure of a liquid in manometer, the column of mercury facing the vapors of a liquid is ______ due to pressure on surface of liquid in a flask: A, compressed B, depressed C, Rises D, Lowers​

Answer 1

Answer:

(a) is correct option

hope it helps

Answer 2

While calculating the vapor pressure of a liquid in a manometer, the column of mercury facing the vapors of a liquid is Lowers ​due to pressure on the surface of the liquid in a flask.

When mercury is used, mercury vapor is toxic. However, a major advantage to using mercury in a manometer is the low vapor pressure of mercury, which is 0.0017 torr at 25 °C.

This small vapor pressure can be ignored for all but very low-pressure measurements. If this is water, this can change the vapor pressure of the liquid by evaporation of itself.

Another thing to consider is how dense the liquid should be to make the difference measurable. The less density of the liquid, the bigger the difference of heights.