Which of the following equations correctly represents the ideal gas law?

• A. PV = nRT
• B. PV = mRT
• C. P + V = nRT
• D. P = nRT/V

Answer: (A)

Verified step by step guidance

1. Recall that the ideal gas law relates the pressure (P), volume (V), amount of substance in moles (n), the ideal gas constant (R), and temperature (T) of an ideal gas.
2. The general form of the ideal gas law is given by the equation: \(PV = nRT\).
3. Here, \(P\) is the pressure of the gas, \(V\) is the volume it occupies, \(n\) is the number of moles of gas, \(R\) is the ideal gas constant, and \(T\) is the absolute temperature in Kelvin.
4. Check each given equation to see if it matches this form exactly. For example, \(PV = mRT\) is incorrect because \(m\) represents mass, not moles.
5. Therefore, the correct equation that represents the ideal gas law is \(PV = nRT\).