Gas Laws Practice
10 problems · instant feedback · full explanations
PV = nRT ties everything together. Remember: temperature must be in kelvin — the most common gas-law error is using Celsius.
Q1.
A gas at constant temperature is compressed to half its volume. The pressure:
Multiple choice · Easy
Q2.
A gas at constant pressure is heated from 300 K to 600 K. Its volume:
Multiple choice · Easy
Q3.
2 L of gas at 100 kPa is compressed to 0.5 L at constant temperature. What is the new pressure?
Numerical answer (kPa) · Medium
Q4.
How many moles are in 10 L of gas at 1 atm (1.013×10⁵ Pa) and 300 K? (R = 8.314 J/mol·K.)
Numerical answer (mol) · Medium
Q5.
3 L of gas at 300 K expands to 6 L at constant pressure. What is the final temperature?
Numerical answer (K) · Medium
Q6.
4 L of gas at 200 kPa and 300 K is compressed to 2 L and heated to 600 K. Final pressure?
Multiple choice · Hard
Q7.
Gas law calculations must use absolute (kelvin) temperature.
True / False · Easy
Q8.
The ideal gas law is exact for all real gases under all conditions.
True / False · Medium
Q9.
One mole of ideal gas at STP occupies:
Multiple choice · Hard
Q10.
In a gas mixture, the total pressure equals:
Multiple choice · Hard