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Energy in reactions 2023
By Sandra Kuhn
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Last updated about 1 year ago
9 questions
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
9.
Which of the following reactions releases the most energy to the surroundings?
∆H = - 38 kJ/mol
∆H = - 456 kJ/mol
∆H = + 547 kJ/mol
∆H = + 1456 kJ/mol
A
C
D
B
The following energy profiles for four different reactions are shown. Which reaction is the most exothermic?
b
d
a
c
Consider the four energy profile graphs shown below:
Identify the two diagrams that could represent the same reaction catalysed and uncatalysed.
graph 1
graph 2
graph 3
graph 4
Graph showing reaction with catalyst present
Graph showing reaction with NO catalyst present
Is the following statement True or False?
True
False
Which of the letters (A - F) represents the energy of the products?
A
B
C
D
E
F
Which of the letters (A - F) represents the energy of the activated complex?
A
B
C
D
E
F
Which of the letters (A - F) represents the activation energy (forward reaction)?
A
B
C
D
E
F
Which of the letters (A - F) represents the heat of reaction/change in enthalpy (forward reaction)?
A
B
C
D
E
F