EC PS 19 Gas Laws

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Arizona State University *

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113

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Chemistry

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Feb 20, 2024

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16

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EC PS #19: Gas Laws ECPS #19: Gas Laws Extra Credit Problem Set #19 is designed to provide extra practice on the gas laws. 1/1 point Match each statement to the gas law it describes. Pressure and volume are inversely propor- tional to one another. Boyle's law Moles and volume are directly proportional to each other. Avogadro's law Pressure and tempera- ture are directly pro- portional to one another. Gay-Lussac's law Temperature and vol- ume are directly pro- portional to one another. Charles's law ES KN i
If no gas particles are lost or gained, then which balloon shows the correct final volume of the balloon after the balloon is moved to a room with a higher external pressure? Hint: The temperature remains constant. n Q Balloon A () Balloon C () Balloon B
If no gas particles are lost or gained, then which balloon shows the correct final volume of the balloon after the balloon has been heated under a constant pressure? P B : / /" nitial A volume P () Balloon B () Balloon A u © Balloon C
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If pressure and temperature are kept constant, then which balloon shows the correct final volume of the balloon after gas particles are added? J ’ J / o ~ /" Initial A 7B 4/(3 volume P () Balloon B () Balloon A u © BalloonC
What would happen to the pressure of a gas if the temperature decreases while the volume is held constant? O Pressure stays the same () Pressureincreases u Q Pressure decreases A sample of carbon monoxide gas has a volume of 3.45 L and a pressure of 2.82 atm, under a constant temperature of 28°C. What is the new volume (in L) if the pressure is increased to 4.20 atm?
A sample of sulfur dioxide gas has a volume of 0.871 L and a temperature of 315 K, under a constant pressure. What is the new volume (in L) if the temperature is increased to 385 K?
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A sample of helium gas has a temperature of 298 K and a pressure of 3.60 atm, under a constant volume. What is the new temperature (in K) if the pressure is increased to 3.80 atm? A sample of chlorine gas has a volume of 2.61 L, a pressure of 0.85 atm, and a temperature of 292 K. What is the new volume (in L) if the new pressure is 0.65 atm and the new temperature is 298 K?
Asample of radon gas has a volume of 1.53 L, a pressure of 1.15 atm, and a temperature of 305 K. What is the new pressure (in atm) if the new volume is 1.78 L and the new temperature is 325 K?
Consider the following conditions: 4.5 moles of helium gas exist under 2.2 atm of pressure at a temperature of 45°C. Assume you are going to use the ideal gas law to solve for the unknown variable. Part A: What variable are you solving for? l I volume Part B: Are all of variables in the correct units? If not, which variable needs to be converted to the correct units? u T should be converted to Kelvin. Consider the following conditions: carbon dioxide gas is placed into a 3 L balloon under a temperature of 305 K resulting in 2.6 moles of carbon dioxide. Assume you are going to use the ideal gas law to solve for the unknown variable. Part A: What variable are you solving for? l I pressure Part B: Are all of variables in the correct units? If not, which variable needs to be converted to the correct units? u Allvariables are in the correct units.
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Using the ideal gas law, what is the pressure (in atm) of a 0.820 mole sample of oxygen gas, under a temperature of 25.0°C and a volume of 4.78 L? Using the ideal gas law, what is the volume (in L) of a 1.43 mole sample of nitrogen gas, under a temperature of 301 K and a pressure of 2.5 atm?
Using the ideal gas law, what is the amount of gas (in moles) of a 8.32 L sample of hydrogen gas, under a temperature of 310 K and a pressure of 1.7 atm? Using the ideal gas law, what is the temperature (in K) of a 2.63 mole sample of xenon gas, with a volume of 1.60 x 10% mL and under a pressure of 2.20 atm?
Consider a situation where 6.2 liters of an ideal gas is contained at 3.0 atm and 37°C. How many moles of gas are present?
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Asample of argon gas at STP occupies 56.2 liters. What is the mass of argon (in g) in the sample? Consider the following reaction: 2 Al(s) + 6 HCI (ag) — 2 AICI3 (ag) + 3 Hy (g) How many grams of hydrogen gas, Hp, are present if the reaction produces 0.35 L of Hjatapressure of 1.1atmand 295 K?
Consider the following reaction: Zn (s) + 2 HCI (ag) — H; (g) + ZnCl; (aq) What volume of H, (in L) is produced at 315 K and 1.25 atm when 3.50 grams of Zn reacts with excess HCI?
Consider the following reaction: CHy (g)+20;(g) — CO, (g) + Hp0 (aq) What pressure of O, (in atm) is needed at 298 K in a container with a volume of 10.0 L to completely combust 10.0 grams of CH4? Consider the following reaction: 2CyHg(g)+702(g) —4CO(g) +6HO(g) Part A: How many moles of ethane, CoHg, are present if the reaction uses 2.5 L of ethane at a pressure of 1.3 atm and a temperature of 305 K? 0.13 moles Part B: If ethane (from Part A) burns in the presence of excess oxygen, O, according to the chemical reaction shown above, how many grams of carbon dioxide, CO», are formed? uz grams
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Consider the following reaction: N2 (g) +312(3) — 2NI3(g) Part A: How many moles of iodine, |5, are present if the reaction uses 11.7 L of iodine at a pressure of 2.00 atm and a temperature of 250 K? 1.14 moles Part B: If the iodine (from Part A) reacts with excess nitrogen, N», according to the chemical reaction shown above, how many grams of nitrogen triiodide, NI 3, are formed? 300. grams

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