The reaction rate for zinc lumps reacting with dilute sulfuric acid is investigated. The test is carried out four times, with just one variable altered on each occasion. The alterations are shown below. 1. The zinc lumps are changed to powdered zinc. 2. Water is mixed with the dilute sulfuric acid. 3. The temperature of the dilute sulfuric acid is raised. 4. A catalyst is introduced into the reaction mixture. Which of these alterations cause the reaction rate to increase?
- A1, 3 and 4
- B1 and 2
- C2 only
- D3 and 4 only