AP Chemistry 3.4: Ideal Gas Law

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

Exam points

Use molecular structure and intermolecular forces to explain polarity, solubility, boiling points, and phases.
Interpret particulate diagrams and experimental observations to compare bonding, forces, and physical properties.

Covered syllabus points

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

[Maximum number: 1]

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

Table for Question 3.4 Ideal Gas Law 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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Covered syllabus points

3.4 Ideal Gas Law question 1