Which of the following factors can affect the value of the activation energy of a reaction? (you can choose more than one answer)

Rate of Reaction - AS Level Exercise

Quiz
•
Chemistry
•
10th - 12th Grade
•
Medium
Muhammad Noor
Used 16+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
the presence of a catalyst
changes in temperature
changes in the concentration of the reactants
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1, 2, and 3 are correct
1 and 2 only are correct
2 and 3 only are correct
1 only is correct
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Boltzmann distribution is shown for a sample of gas at an initial temperature, T1. The sample of gas was heated to temperature, T2. What is the correct distribution for the higher temperature, T2?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a Boltzmann distribution of molecular energies for a gaseous mixture. The distribution has a peak, labelled P on the diagram. What happens when the temperature of the mixture increases?
The height of the peak P, decreases and the activation energy moves to the left.
The height of the peak P, decreases and the activation energy moves to the right.
The height of the peak P, decreases and the activation energy does not change
The height of the peak P, increases and the activation energy moves to the left.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram shows a Boltzmann distribution of molecular energies for a gaseous mixture. The distribution has a peak, labelled P on the diagram. What happens when an effective catalyst is added to the mixture?
The height of the peak decreases and the activation energy moves to the right.
The height of the peak decreases and the activation energy moves to the left.
The height of the peak remains the same and the activation energy moves to the right.
The height of the peak remains the same and the activation energy moves to the left.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement about Ea1 is correct?
Ea1 corresponds to a catalysed reaction with fewer effective collisions than the uncatalysed reaction.
Ea1 corresponds to an uncatalysed reaction with fewer effective collisions than the catalysed reaction.
Ea1 corresponds to a catalysed reaction with a greater number of effective collisions than the uncatalysed reaction.
Ea1 corresponds to an uncatalysed reaction with a greater number of effective collisions than the catalysed reaction.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
higher temperature=P; presence of catalyst=X
higher temperature=P; presence of catalyst=Y
higher temperature=Q; presence of catalyst=X
higher temperature=Q; presence of catalyst=Y
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