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. 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?

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


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

Time taken.
Odour.
Amount of product formed.
Temperature of solution.


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

Concentration.
Time.
Mass.
Volume.


Question 4. 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.
25% per minute.
0.32g per percent.


Question 5. When calculating the rate of change in chemistry, which variable could you be observing change?

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


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