A student conducted an experiment to determine the rate of a chemical reaction - VCE - SSCE Chemistry - Question 11 - 2023 - Paper 1

The initial rate of a reaction is typically measured as the change in concentration of a product over the change in time. Therefore, the unit for the rate of reaction can be expressed as:

$\text{rate} = \frac{\Delta [\text{product}]}{\Delta t}$

Where:

• $\Delta [\text{product}]$ is the change in concentration (measured in Molarity, M)
• $\Delta t$ is the change in time (measured in seconds, s)

Thus, the units for the initial rate of reaction can be deduced to be M/s.