Question

Choose the CORRECT definition of vapour pressure.

Pressure exerted by
the vapour molecules
at equilibrium with its
liquid and gas in a
closed container.
Pressure exerted by
the vapour molecules
at equilibrium with its
liquid in a closed
container.
Pressure exerted by
the vapour molecules
at equilibrium with its
vapour in a closed
container.
Pressure exerted by
the vapour molecules
at equilibrium with its
liquid in open
container.

Answer 1

Vapour pressure is the pressure exerted by vapour molecules in equilibrium with its liquid and gas in a closed container.

Step-by-step explanation:

Vapour pressure refers to the pressure exerted by the vapour molecules at equilibrium with its liquid and gas in a closed container. When a liquid is placed in a closed container, its molecules escape into the gas phase, exerting pressure on the container walls. As more molecules enter the gas phase, the pressure increases until it reaches equilibrium with the liquid. This pressure is known as vapour pressure.

Learn more about Vapour pressure