Question

multiple choice question
which term describes the amount of pressure each gas in a mixture contributes to the overall gas pressure?
mercury pressure
mixed pressure
total pressure
partial pressure

Explanation:

• Mercury pressure: Refers to pressure measured using mercury (e.g., in a mercury - based barometer), not related to gas mixture contributions.
• Mixed pressure: Not a standard term in gas laws for individual gas contributions.
• Total pressure: The sum of all partial pressures (from Dalton's law), not the contribution of each gas.
• Partial pressure: Dalton's law states that in a gas mixture, each gas exerts a partial pressure, which is the pressure it would exert if it alone occupied the volume.

Answer:

partial pressure