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Partial Pressure

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AP Chemistry

Definition

Partial pressure is the individual pressure that a specific gas in a mixture would exert if it alone occupied the same volume.

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Practice Questions (6)

In a first order reaction of gaseous cyclobutene forming into gaseous butadiene, it's partial pressure drops to 0.125 of its original value within 124 seconds. At this temperature, what is the half life?
A reaction vessel is filled such that the concentration of hydrogen gas, chlorine gas, and hydrogen chloride each have a partial pressure of 1.0 atm. What happens to the total pressure of the reaction vessel as the reaction proceeds to equilibrium?
What is the value of Kp given that at equilibrium, the partial pressure of oxygen gas is 2.0 atm, the partial pressure of a free oxygen atom is 1.0 atm, and the partial pressure of ozone is 4.0 atm at 298 K?
A chemical reaction has established equilibrium in a container in which there are all gaseous molecules. There are known to be five moles of the products and one mole of the reactants. What can be said about the partial pressure and how does it relate to the equilibrium constant?
The following chemical reaction is given regarding the formation of hydrogen iodide: H2(g)+I2(g)⇌2HI(g). It is found that initially there is only hydrogen and iodine gas in the container. At equilibrium it is found that the partial pressure of HI is 0.6 atm and the equilibrium constant is 45. What is the starting partial pressure for both hydrogen and iodide?
A sample of gas has a total of 4.7 mols of gas. Of those 4.7 mols, 0.79 mols are Nitrogen. Given that the total pressure of the mixture is 6.7 atm, what is the partial pressure of nitrogen gas?

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