Answers: Exercise 1_2A Enthalpy

1.	C
2.	B
3.	D
4.	B
5.	D
6.	D
7.	D
8.	A
9.	B
10.	B

11.
a)
	Line showing position of EA.

12.	B
13.	a)
i)	Activation energy = 70kj mol^-1 Enthalpy change = +40 kj mol^-1
ii)	Activation energy = 30kj mol^-1 Enthalpy change = -40 kj mol^-1
b)	Activation energy would be reduced by use of a catalyst.
14.


15.

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