
Half-Life and Reaction Rates

Interactive Video
•
Chemistry, Physics, Mathematics
•
11th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction is the decomposition of ammonia on a metal surface?
Second-order reaction
Third-order reaction
First-order reaction
Zero-order reaction
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the rate constant for the decomposition of ammonia given in the problem?
2.5 x 10^-3 mol/L/s
2.5 x 10^-4 mol/L/s
2.5 x 10^-5 mol/L/s
2.5 x 10^-6 mol/L/s
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the rate of a zero-order reaction determined?
It depends on the concentration of the reactant.
It is independent of the concentration of the reactant.
It depends on the pressure only.
It depends on the temperature only.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the initial incorrect calculation for the concentration of ammonia after 1 hour?
1.8 molar
2.2 molar
4.0 molar
3.1 molar
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the correct concentration of ammonia after 1 hour?
1.8 molar
3.1 molar
4.0 molar
2.2 molar
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of half-life in the context of this reaction?
Time for the concentration to double
Time for the concentration to drop by 25%
Time for the concentration to drop by 50%
Time for the concentration to triple
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial concentration of ammonia used to calculate the half-life?
2 molar
3 molar
5 molar
4 molar
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