+1 vote
in Fluid Mechanics by (118k points)
The three liquids 1, 2, and 3 with vapor pressures V1, V2 and V3 respectively, are kept under same pressure. If V1 > V2 > V3, which liquid will start boiling early?

(a) liquid 1

(b) liquid 2

(c) liquid 3

(d) they will start boiling at the same time

The question was posed to me by my school principal while I was bunking the class.

This interesting question is from Vapor Pressure topic in chapter Properties of Fluids of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
The correct choice is (a) liquid 1

For explanation: A liquid starts to boil whenever it’s absolute pressure drops below it’s vapor pressure. Thus, the absolute pressure of liquid 1 will drop early, as a result it’ll start boiling early.

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