Two experiments were conducted to investigate various factors that affect the rate of reaction between calcium carbonate and dilute hydrochloric acid - VCE - SSCE Chemistry - Question 1 - 2012 - Paper 1

To measure the rate of the reaction between calcium carbonate and hydrochloric acid, there are several approaches that can be utilized:

1. Monitoring Mass Loss: You can measure the mass of the beaker along with its contents at regular time intervals. By tracking the loss of mass over time, we can infer the rate at which $ext{CO}_2(g)$ is produced. This is due to the fact that $ext{CO}_2$ gas will escape, resulting in a decrease in the mass of the system.

2. Measuring Volume of Gas: Alternatively, you can use a gas syringe or an inverted measuring cylinder filled with water to capture the volume of $ext{CO}_2$ produced at different time intervals. This method involves collecting the gas produced and correlating the volume to the time elapsed in the reaction.

Both methods provide a quantitative measure of the reaction rate, indicating how quickly $ext{CO}_2$ is generated over the course of the reaction.