Which three variables are commonly involved in the study of gas laws?

• A. Pressure, solubility, and color
• B. Molarity, pH, and temperature
• C. Pressure, volume, and temperature
• D. Mass, density, and concentration

Answer: (C)

Verified step by step guidance

1. Identify the key variables that describe the behavior of gases in the context of gas laws.
2. Recall that gas laws typically relate pressure (P), volume (V), and temperature (T) of a gas sample.
3. Understand that these variables are connected through equations such as Boyle's Law (\[P \times V = \text{constant}\]), Charles's Law (\[\frac{V}{T} = \text{constant}\]), and the Combined Gas Law (\[\frac{P \times V}{T} = \text{constant}\]).
4. Recognize that solubility, color, molarity, pH, mass, density, and concentration are not the primary variables in gas laws but relate to other chemical concepts.
5. Conclude that the three variables commonly involved in the study of gas laws are pressure, volume, and temperature.