Reply #24: Liquids Are Incompressible [View All]

[ProfessorGAC]

They don't expand and increase fluid pressure. Since the bottle isn't full, there won't be any pressure.

Secondly, hot tap water won't get hot enough to raise the overall bulk temperature to a point where anything gets to its boiling point. Remember that 55 - 60% of everything in there is water. The boiling point of that is 100, and the partial pressure can only be 55 - 60% of 760mmHg, even at the boiling point of water.

Everything else in there might have a lower boiling point but the mole fractions would be so low that the overall pressure contribution will be very small.

You will have to have hot water bordering on boiling which wouldn't happen off the faucet.

Just didn't want anybody to be scared to do this.
The Professor