AP Chem Unit 5 Review

Quiz
•
Chemistry
•
11th Grade
•
Medium
Standards-aligned
Corinne Lindemann
Used 75+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following gives the correct rate law for the decomposition of hydrogen peroxide?
H2O2 -> H2 + O2.
Rate = k [H2O2]
Rate = k [H2][O2]
Tags
NGSS.HS-PS1-5
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following explains how a catalyst works?
It leads to the formation of a more stable activated complex
If lowers the activation energy of the reaction
It increases the frequency of collisions
It improves the orientation of particles
Answer explanation
Be careful. You may have learned in Chem 1 that a catalyst functions by lowering the activation energy of a reaction. That's not entirely true. A catalyst works by improving the reaction conditions and creating a new reaction mechanism.
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following are not included in rate law expressions? (Select all that apply).
Solids
Liquids
Gases
Intermediates
Reactants
Tags
NGSS.HS-PS1-5
4.
OPEN ENDED QUESTION
3 mins • 1 pt
What two conditions must be met for a reaction to occur?
Evaluate responses using AI:
OFF
Tags
NGSS.HS-PS1-5
5.
HOTSPOT QUESTION
1 min • 1 pt
Which of the following points represents intermediates in a multistep reaction?
Answer explanation
Points C and E represent the intermediates of this reaction.
Tags
NGSS.HS-PS1-4
6.
DRAW QUESTION
3 mins • Ungraded
Draw an arrow indicating the activation energy (Ea) of this reaction.
Answer explanation
The activation energy will be the distance from the reactants to the highest peak (D). This will be the slow or rate-determining step of this multistep reaction.
Tags
NGSS.HS-PS1-4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the rate law expression is given as rate = k[NO2]2[Br2], what is the overall order of this reaction?
0
1
2
3
Answer explanation
If given a rate law expression, the overall order of the reaction is found by adding the exponents. This reaction is second order, in respect to [NO2], and first order, in respect to [Br2]. The overall order is 2 + 1 = 3
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