AP Chemistry 3.4.A: Ideal Gas Law

Explore AP Chemistry 3.4.A questions on using the ideal gas law and related gas relationships to calculate pressure, volume, temperature, moles, and mixtures.

Exam points

Explain how intermolecular attractions and molecular structure determine physical properties of substances.
Apply particle-level models to predict boiling points, solubility and phase behavior from molecular interactions.

[Maximum number: 1]

Complete Lewis diagrams and some physical properties for compounds X and Y are given.

Table for Question 3.4.A—Explain the relationship between the macroscopic properties of a sample of gas or mixture of gases using the… question 1 — AP Chemistry

The mixture is heated to 198°C in a sealed, rigid 12.5 L container, at which point both

substances are gases and the total pressure in the container is 2.30 atm. Calculate the number

of moles of gas particles in the container.

D	For the correct calculated value: \[ \begin{aligned}	P V=n R T
	n=\frac{P V}{R T}=\frac{(2.30 ~atm)(12.5 ~L)}{\left(0.08206 \frac{~L \cdot ~atm}{~K \cdot ~mol}\right)(471 ~K)}=0.744 ~mol \end{aligned} \]	Point 04

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3.4.A—Explain the relationship between the macroscopic properties of a sample of gas or mixture of gases using the… question 1