Kinetics and Gases Final Exam Review 7a-d, 6c
Quiz by Darrien James
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- Q1
A student is trying to increase the rate of a chemical reaction. Which of the following changes would increase the rate of the reaction?
Decreasing the surface area
Increasing the particle size
Increasing the concentration of reactantsDecreasing the concentration of reactants
30s - Q2
What effect does a catalyst have on the rate of a chemical reaction?
It decreases the rate of a chemical reaction by increasing the activation energy
It decreases the rate of a chemical reaction by decreasing the enthalpy.
It increases the rate of a chemical reaction by increasing the enthalpy.
It increases the rate of a chemical reaction by decreasing the activation energy30s - Q3
A student is working on a Le Chatelier's Principle’s Lab. The balanced equation for the reaction is below, As the reaction proceeds, the student observes a color change.
Which stress would result in the student observing a dark purple color in the reaction?
Add heat
Add HIAdd H2
Remove HI
30s - Q4
A balloon is inflated with helium to a volume of 1.5 L at 295K. The balloon was found several hours later, the temperature had dropped to 273 K. What would be the volume of the balloon when found, if no helium has escaped?
1.4 L0.61 L
1.6 L
6.0 L
30s - Q5
A 2.0L sample of nitrogen in a container had a pressure of 3.2 atm. If the pressure in the container is increased to 7.0 atm. What is the new volume of the gas in the container?
5.0 L
0.91 L2.5 L
4.4 L
30s - Q6
A sample of gas has a pressure of 10.0 atm and a temperature of 100.0 °C. Calculate the pressure if the temperature is changed to 200.0 °C.
7.89 atm
10.atm
12.6 atm
20.0 atm
30s - Q7
How many moles of gas does it take to occupy 10 liters at a pressure of 2.0 atmospheres and a temperature of 500 K?
0.487 mol
821 mol
1218 mol
31250 mol
30s - Q8
A student observed a successful chemical reaction in the lab. Which of the following can be concluded about the reaction?
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