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?

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

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

Question 3. Which is the highest rate of reaction?

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

Question 4. 270g of calcium carbonate is heated to 900°C for 30 minutes until it has completely thermally decomposed. What is the rate of reaction?

0.033 minutes per °C.
9g per minute.
0.11 minutes per gram.
0.3g per °C.

Question 5. Which is the lowest rate of reaction?

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

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