The Ideal Gas Law

Question 9 • * SY2026-27 - 2003340 Chemistry 1 Sem 2 CR

A student uses the value 0.0821 L• atm/mol • K for the gas constant in the ideal gas law. What are the most appropriate units for pressure, volume, and temperature in this case?

Answer

P has the units of atm, V has units of milliliters, and T has the units of kelvin.

P has the units of mmHg, V has units of liters, and T has the units of degrees Celsius.

P has the units of atm, V has the units of liters, and T has units of kelvin.

P has units of liters, V has units of liters, and T has units of degrees Celsius.

Explanation

In the ideal gas law, the units used for pressure, volume, and temperature must match the units in the gas constant. The value 0.0821 has units of L·atm/(mol·K), so use pressure in atmospheres, volume in liters, and temperature in kelvin. Therefore, choice C is correct.

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