Chapter 5 BR #2: Dalton's Law of Partial Pressure

Front

What is Dalton's Law of Partial Pressure?

Back

Dalton's Law states that the total pressure exerted by a mixture of non-reactive gases is equal to the sum of the partial pressures of each individual gas.

Front

How do you calculate the total pressure of a mixture of gases?

Back

The total pressure (P_total) is calculated by adding the partial pressures of each gas: P_total = P_1 + P_2 + ... + P_n.

Front

What is a partial pressure?

Back

Partial pressure is the pressure that a single gas in a mixture would exert if it occupied the entire volume alone.

Front

If the partial pressures of three gases are 2.00 atm, 3.00 atm, and 4.00 atm, what is the total pressure?

Back

Total pressure = 2.00 atm + 3.00 atm + 4.00 atm = 9.00 atm.

Front

What happens to the total pressure if you increase the amount of gas in a container?

Back

Increasing the amount of gas in a container increases the total pressure, assuming temperature and volume remain constant.

Front

What is the formula for calculating the pressure of a gas in a mixture?

Back

P_gas = P_total - P_other_gases.

Front

What is the significance of the term 'non-reactive gases' in Dalton's Law?

Back

Non-reactive gases do not chemically interact with each other, allowing their pressures to be summed without affecting each other's behavior.

Front

What is the relationship between temperature and gas pressure in a closed container?

Back

At constant volume, increasing the temperature of a gas increases its pressure.

Front

What is the effect of volume on the pressure of a gas at constant temperature?

Back

At constant temperature, increasing the volume of a gas decreases its pressure (Boyle's Law).

Front

What is the unit of pressure commonly used in gas calculations?

Back

Common units of pressure include atmospheres (atm), torr, and pascals (Pa).