AP CHEM The Ideal Gas

Front

What is an ideal gas?

Back

A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory.

Front

What does the kinetic-molecular theory state about gas particle collisions?

Back

Collisions between gas particles are elastic.

Front

What is the relationship between temperature and kinetic energy in gases?

Back

The temperature of a gas depends on the average kinetic energy of the gas particles.

Front

What is the value of R in the ideal gas law when pressure is in atm?

Back

0.0821 L·atm/(K·mol)

Front

What does the ideal gas law equation PV = nRT represent?

Back

It relates the pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T) of an ideal gas.

Front

What factors does the pressure exerted by a gas depend on?

Back

Temperature, volume, and number of moles present.

Front

What does STP stand for in gas calculations?

Back

Standard Temperature and Pressure, defined as 0°C (273.15 K) and 1 atm.

Front

How does the identity of a gas affect its pressure?

Back

The pressure exerted by a gas does not depend on the identity of the gas.

Front

What is the volume of an ideal gas at STP if it occupies 250 mL at 25°C and 740 mmHg?

Back

223 mL.

Front

What is the significance of the ideal gas law in chemistry?

Back

It allows for the calculation of one property of a gas if the others are known.