Snapquiz - Rate of Reaction

This is the Snapquiz on Rate of Reaction. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. Which is the lowest rate of reaction?

20g per minute.
1.08kg per hour.
1000g per hour
0.3g per second.


Question 2. 120g of magnesium is added to a 0.5 molar solution of sulphuric acid. After 15 minutes it is still reacting and it has produced 60cm3 of hydrogen gas. What is its rate of reaction?

8g per minute.
4cm3 per minute.
0.5cm3 per gram.
2g per cm3.


Question 3. When calculating the rate of change in chemistry, which variable will you usually be dividing by?

Concentration.
Time.
Volume.
Mass.


Question 4. When calculating the rate of change in chemistry, which variable could you be observing change?

Amount of fizzing.
Colour.
Time taken.
Amount of reactant used up.


Question 5. A reaction between a 1.0 molar hydrochloric acid solution and some 15% pure copper carbonate ore takes 12 minutes to form 4.8g of copper chloride. What is its rate of reaction?

0.067 moles per percent.
0.32g per percent.
25% per minute.
0.4g per minute.


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