Ideal Gas Law
P, V & T
Enthalpy Calculations
Hess's Law
100
If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what would happen to the pressure of the gas?
What is it would increase.
100
Is the volume of 1 mol of gas at standard temperature and pressure the same for any gas?
What is yes?
100
What is 
Gsystem for the system that is described by the following data?
Hsystem = –232 kJ, T = 293 K, 
Ssystem = 195 J/K
Gsystem = 
Hsystem – T
Ssystem
What is –289 kJ?
100
This law states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.
What is Hess's Law?
200
The law where the product of pressure and volume of an ideal gas is proportional to the absolute temperature.
What is the Ideal Gas Law?
200
The greater the speed of gas particles in a container, the __________________ the pressure.
What is greater?
200
The decomposition of calcium carbonate, CaCO3(s) 
CaO(s) + CO2(g), has the following values for free energy and enthalpy at 25.0°C.
G = 130.5 kJ/mol
H = 178.3 kJ/mol
What is the entropy of the reaction? Use 
G = 
H – T
S.
What is 160.3 J/(mol
K)?
200
Consider the following intermediate chemical equations.
The overall chemical equation is 
. To calculate the final enthalpy of the overall chemical equation, which step must occur?
What is reverse the second equation, and change the sign of the enthalpy. Then, add.
300
If the pressure, volume, and temperature of a gas are known, what can most likely be found by using the ideal gas law?
What is the Ideal Gas Law?
300
When an inflated balloon is exposed to cold air, what happens to its volume?
What is it decreases?
300
For the process 2SO2(g) + O2(g) 
2SO3(g), 
S = –187.9 J/K and 
H = –198.4 kJ at 297.0 K are known. What is the entropy of this reaction?
Use 
G = 
H – T
S.
What is –187.9 J/K?
300
Consider the following intermediate chemical equations.
When you form the final chemical equation, what should you do with CO?
What is cancel out CO because it appears as a reactant in one intermediate reaction and a product in the other intermediate reaction.
400
The type of pressure that is exerted by one gas as if it occupied a container by itself
What is partial pressure?
400
What law states that as the temperature of a gas increases, the volume increases?
What is Boyle's Law?
400
A sample of iron (Fe) with a mass of 200.0 g releases 9,840 cal when it freezes at its freezing point. What is the molar heat of fusion for iron?
Use 
.
What is 2,747.7 cal/mol?
400
Consider the following intermediate chemical equations.
How will oxygen appear in the final chemical equation?
What is 
as a reactant?
500
What is assumed to be constant while using the combined gas law?
What is the number of moles?
500
The volume of a gas is 450 mL when its pressure is 1.00 atm. If the temperature of the gas does not change, what is the pressure when its volume is changed to 2.00 L?
Use 
.
What is .225?
500
H2O has a 
Hvap = 40.7 kJ/mol. What is the quantity of heat that is released when 27.9 g of H2O condenses?
Use 
.
What is 63.09 kJ?
500
Consider the following enthalpy diagram:
Which label shows the overall enthalpy change and is the reaction exothermic or endothermic?
What is D, endothermic?