5
QuizMultiple Choice

The Ideal Gas Law — Quiz

Question 5 • Chemistry

A student uses 0 point 0 8 2 1 the fraction with numerator cap l times atm and denominator mol times cap k as the value of the gas constant. What is most likely true about the variables in the ideal gas law?

Answer
A
cap v has the units of liters, and cap t has the units of kelvin.
B
cap v has the units of liters, and cap t has the units of degrees Celsius.
C
cap p has the units of liters atmospheres, and cap t has the units of degrees Celsius.
D
cap p has the units of liters atmospheres, and cap t has the units of kelvin.

Explanation

The gas constant 0.0821 L·atm/(mol·K) means pressure is measured in atmospheres, volume in liters, and temperature in kelvin. In the ideal gas law, those variables are P, V, and T, respectively. Therefore, V has units of liters and T has units of kelvin, matching choice D.

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