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WorksheetsRate of Reaction N5
Total questions: 16
Worksheet time: 18mins
Which of the following will speed up a chemical reaction?
Lower concentration
Lower temperature
Bigger particle size
Add a catalyst
Which of the following will slow down a chemical reaction?
Lower concentration
Increase temperature
Increase particle size
Add a catalyst
Which of these does NOT affect rate of reaction at all?
Temperature
Concentration
Particle Size
Volume of liquid
Which of the following is not true about catalysts?
They speed up a reaction
They get used up during a reaction
There are specific catalysts for different reactions
You can reuse them
Which Reaction would be the fastest?
A
C
D
E
In a reaction, the mass lost in 30 seconds was 2 g. What is the average rate of reaction, in g s−1, over this time?
1/30
30/2
1/2
2/30
A student measured the volume of hydrogen gas produced when zinc lumps were added to dilute hydrochloric acid.
Calculate the average rate of reaction, in cm3 s−1, between 10 and 30 seconds. (TYPE ONLY THE NUMBER)
(a)
The volume of gas collected in 2 minutes was 5cm3.
What was the average rate of reaction over this time?
0.2
0.4
2.5
5
The volume of gas collected in 2 minutes was 5cm3.
What are the units for the average rate of reaction?
cm3/min-1
cm3min-1
min/cm3
min cm-3
Which reaction is the fastest?
A
B
If reaction 1 (circle) used 1g of metal powder, what mass did reaction 3 (triangle) use?
0.5g
1g
2g
At what time did reaction 2 (Square) finish
60s
70s
80s
90s
What total volume (in cm3) of CO2 was given off in reaction 3 (triangle)?
36
54
72
90
Which catalyst is the most effective?
Silicon DIoxide
Copper (II) Oxide
Manganese (IV) Oxide
Which of these is not a valid way of measuring reaction rate?
Mass loss
Gas syringe
Water displacement
Volume of sound
The table shows the results obtained in an experiment carried out to measure the volume of ethyne gas produced.
Calculate the average rate of reaction between 60 and 90 seconds.
(a)
