Dalton's Law of Partial Pressure-MSJ

Front

What is Dalton's Law of Partial Pressure?

Back

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

Front

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

Back

Total pressure = Partial pressure of Gas 1 + Partial pressure of Gas 2 + ... + Partial pressure of Gas 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 is the formula to find the partial pressure of a gas in a mixture?

Back

Partial pressure = Total pressure - Sum of the partial pressures of other gases.

Front

What is the relationship between pressure and temperature for gases?

Back

According to Gay-Lussac's Law, the pressure of a gas is directly proportional to its temperature when volume is held constant.

Front

What is the significance of measuring gas pressure in mmHg?

Back

Millimeters of mercury (mmHg) is a unit of pressure that indicates how high a column of mercury would rise due to the pressure exerted by the gas.

Front

How do you convert atm to kPa?

Back

1 atm = 101.325 kPa. To convert atm to kPa, multiply the pressure in atm by 101.325.

Front

What is the partial pressure of water vapor at 25 °C?

Back

At 25 °C, the partial pressure of water vapor is approximately 23.8 mmHg.

Front

If the total pressure is 864 mmHg and the partial pressures of hydrogen and nitrogen are 220 mmHg and 410 mmHg respectively, what is the partial pressure of water vapor?

Back

Partial pressure of water vapor = 864 mmHg - (220 mmHg + 410 mmHg) = 234 mmHg.