Gas Stoichiometry Under Non-Standard Conditions
Chemistry ⇒ Stoichiometry and Chemical Calculations
Gas Stoichiometry Under Non-Standard Conditions starts at 11 and continues till grade 12.
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Explain the difference between STP and non-standard conditions in gas calculations.
Explain why the ideal gas law may not accurately predict the behavior of real gases at high pressures and low temperatures.
Explain why the volume of a gas increases with temperature at constant pressure.
If the temperature of a gas is increased from 300 K to 600 K at constant pressure, what happens to its volume?
The pressure of a gas is doubled while the temperature is kept constant. What happens to the volume?
A 3.00 g sample of NH3 is collected over water at 25°C and 0.98 atm. If the vapor pressure of water at 25°C is 0.031 atm, what is the volume of dry NH3 collected? (R = 0.0821 L·atm·mol-1·K-1)
A 0.250 mol sample of a gas is collected at 1.10 atm and 290 K. What is the density of the gas in g/L if its molar mass is 44.0 g/mol? (R = 0.0821 L·atm·mol-1·K-1)
A 2.00 L container holds a mixture of gases: 0.10 mol of He, 0.15 mol of Ne, and 0.20 mol of Ar at 300 K. Calculate the partial pressure of Ne in the container. (R = 0.0821 L·atm·mol-1·K-1)
A 3.00 g sample of magnesium reacts completely with excess hydrochloric acid to produce hydrogen gas. The hydrogen gas is collected over water at 30°C and a total pressure of 1.05 atm. The vapor pressure of water at 30°C is 0.042 atm. Calculate the volume of dry hydrogen gas collected. (R = 0.0821 L·atm·mol-1·K-1)
Which law relates the pressure and volume of a gas at constant temperature? (1) Boyle's Law (2) Charles's Law (3) Avogadro's Law (4) Gay-Lussac's Law
Which of the following equations is used to calculate the partial pressure of a gas collected over water? (1) Ptotal = Pgas + Pwater (2) Pgas = Ptotal - Pwater (3) Pgas = Ptotal × Pwater (4) Pgas = Ptotal / Pwater
Which of the following is a correct statement about Avogadro's Law? (1) Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. (2) The pressure of a gas is inversely proportional to its volume. (3) The volume of a gas is directly proportional to its temperature in Celsius. (4) The number of moles of a gas is inversely proportional to its pressure.
Which of the following is NOT a standard condition for gases? (1) 0°C (2) 1 atm (3) 22.4 L (4) 273 K
The combined gas law can be written as ________.
The ideal gas law is represented by the equation ________.
The value of the gas constant R in L·atm·mol-1·K-1 is ________.
True or False: At non-standard conditions, the volume of 1 mol of gas can be calculated using the ideal gas law.
True or False: The ideal gas law can be used to calculate the volume of a gas at any temperature and pressure, provided the gas behaves ideally.
True or False: The molar volume of a gas at STP is always 22.4 L.
True or False: The volume of a gas is directly proportional to its temperature in Kelvin, at constant pressure.
