Answers: Exercise 1_1C Rates

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

11.
a)	Rate = change / time =36-24/10 12/10 1.2 cm³s^-1
b)

12.	suitable method, tubes must not be blocked

13.
a)
b)

14.
a)
b)	119.8-118.25/5 = 1.55/5 = 0.31 g s^-1
c)	As the reaction proceeds, the reactants are being used up. Consequently, the concentration of reactants decreases. Reducing the concentration of reactants reduces the rate of reaction.
d)
e)
15.


a)	Prevents loss of mass due to spitting/ bubbling of liquid out of container
b)	Rate = change/ time 165.00-163.8/10 0.12 g s^-1
c)

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