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. 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?

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

Question 2. When calculating the rate of change in chemistry, which variable could you be observing change?

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

Question 3. Which is the highest rate of reaction?

7g per minute.
0.36kg per hour.
300g per hour.
0.1g per second.

Question 4. 256g of zinc carbonate is added to a 0.1 molar solution of nitric acid. After 8 minutes it is still reacting and it has produced 12cm3 of carbon dioxide gas. What is its rate of reaction?

120cm3 per mole.
32g per minute.
1.5cm3 per minute.
21.33g per cm3.

Question 5. Which is the lowest rate of reaction?

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

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