CH-1661
Temperature and rate
Chemistry · Secondary 4 · Hard · Temperature and rate
The reaction between calcium carbonate and hydrochloric acid is carried out at two different temperatures, 25 °C and 45 °C, using the same concentrations and volumes. Which statement correctly explains the effect of increasing temperature on the rate of reaction?
- Rate decreases because particles collide less often.
- Rate decreases because activation energy increases.
- Rate increases because more collisions have enough energy to react.
- Rate is unchanged because concentration is constant.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.