Question

multiple choice question
the concentration of a specific gas in a mixture of gases is proportional to the ———— of that gas.
mixed pressure
total pressure
mercury pressure
partial pressure

Explanation:

According to Dalton's law of partial pressures, in a mixture of non - reacting gases, the concentration (or amount) of a specific gas is related to its contribution to the total pressure. The partial pressure of a gas in a mixture is the pressure that gas would exert if it alone occupied the volume of the mixture at the same temperature. The concentration of a gas (e.g., in terms of mole fraction) is proportional to its partial pressure. Mixed pressure is not a standard term in this context. Total pressure is the sum of all partial pressures. Mercury pressure is a way of measuring pressure (e.g., in a mercury manometer) but not relevant to the proportionality here.

Answer:

partial pressure