Question

3
what is the partial pressure of a gas in a mixture of gases?
a. the pressure exerted by one gas in a mixture
b. the pressure each gas would contribute at stp
c. the average pressure of the individual gases
d. the sum of the individual gas pressures in the mixture

Explanation:

Partial pressure is defined as the pressure exerted by an individual gas in a mixture of gases. It is not related to STP (standard temperature and pressure) as in option B. Option C is incorrect as it's not an average. Option D is the total pressure (from Dalton's law: \(P_{total}=P_1 + P_2+\cdots+P_n\)), not partial pressure.

Answer:

A. The pressure exerted by one gas in a mixture