Rates of reaction and collision theory

Question 1 of 10

Increasing the pressure of a gaseous reaction increases the rate because

Question 2 of 10

30 cm³ of gas was collected in 40 s. Find the average rate of reaction.

Question 3 of 10

Enzymes are

Question 4 of 10

Enzymes work best at an optimum temperature.

Question 5 of 10

40 cm³ of gas was collected in 40 s. Find the average rate of reaction.

Question 6 of 10

The mass of a solid reactant fell from 2.4 g to 1.2 g in 20 s. Find the average rate of loss of reactant.

Question 7 of 10

30 cm³ of gas was collected in 60 s. Find the average rate of reaction.

Question 8 of 10

If 50 cm³ of hydrogen is produced in 50 s, the average rate is ___ cm³/s.

Question 9 of 10

The rate of a reaction can be measured by

Question 10 of 10

With the aid of an energy profile diagram, explain how a catalyst increases the rate of a reaction. Give two industrial examples of catalysts.