Study Guide for Gas Laws Test (Honors)
Chapter 13 sections 1 and 4, Chapter 14
Items marked with an asterisk (*) are for honors level only.
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List the characteristics of an real gas
List the characteristics of an ideal gas.
What is pressure? What are the possible units?
If the pressure of a gas is 5atm, what is the pressure in mmHg? Torr? kPa?
How many moles is 3L of O2?
If the initial volume is 5cm3 at STP, what will be the volume at a pressure of 1200mmHg and a temperature of
25C?
What is the partial pressure of oxygen if a mixture of nitrogen and oxygen has a total pressure of 500mmHg and
the nitrogen has a partial pressure of 0.2atm?
What is the pressure if 7L of gas at 2atm is reduced to 0.5L?
What is atmospheric pressure?
What is standard pressure? What is standard temperature?
If water at 19oC occupies 4.0L, what will be the new volume if the temperature is increased to 70.oC?
If 7.0L at standard pressure is allowed to expand to 10.L, what is the new pressure if temperature remains
constant?
What volume will 3.2 moles of a gas occupy at STP?
How many moles are in a tank of Helium gas if the tank has volume of 15L and the pressure is 3.5atm and the
temperature is 22oC?
The pressure of 5L of a gas confined in a steel tank at 55oC is 12.2atm. What will the temperature be if the tank
is heated until the pressure is 29atm?
What happens to pressure if volume decreases? What if volume increases?
What happens to volume if temperature increases? What if temperature decreases?
At STP, what is the volume of one mole of a gas?
Interpret a phase diagram to determine the phase/changes of a substance at a given temperature and pressure.
a. What is the state of water at 1 atm and 50oC? What happens if the temp increases to 120oC?
b. What is the state of water at 100atm at 100oC? What happens if the pressure drops to 0.5atm?
What does triple point and critical point mean?
How do you determine the normal boiling and freezing points of a substance?
*What is the pressure in torr that a 0.68g sample of oxygen gas will exert at a temperature of 53.4C when it
occupies a volume of 6L?
*What is the molar mass of a gas that has a density of 1.02g/L at 0.990atm pressure and 37C?
*Calculate the grams of Hydrogen gas present in a 3.50L sample kept at 1.66atm pressure and a temperature of
10oC.
*Calculate the ratio of effusion rates for methane (CH4) and nitrogen.
*Calculate the molar mass of butane. Butanes rate of effusion is 3.8 times slower than that of Helium.
Blast furnaces give off many unpleasant and unhealthy gases. If the total air pressure is 0.99atm, the partial
pressure of carbon dioxide is 0.05 atm and the partial pressure of hydrogen sulfide is 0.02atm, what is the
partial pressure of the remaining air?
A gas system has an initial volume of 6780mL with an unknown number of moles. When the volume changes to
5048 mL (with constant pressure and temperature), the number of moles is found to be 0.414moles. What was
the initial number of moles?