A student investigates the rate of reaction between a fixed mass of large marble chips (CaCO3\text{CaCO}_3CaCO3) and an excess of dilute hydrochloric acid (HCl\text{HCl}HCl) using the apparatus shown below.
Which statement about the control and monitoring of this reaction is correct?
The rate of mass loss is greatest at the start of the reaction because the concentration of the acid is at its maximum.
Placing a tight rubber bung in the neck of the flask instead of the cotton wool plug allows the mass loss to be monitored more accurately.
Using the same mass of finely powdered calcium carbonate instead of large chips will increase the total mass loss recorded at the end of the reaction.
Doubling the volume of the excess 1.0 mol dm−31.0\text{ mol dm}^{-3}1.0 mol dm−3 hydrochloric acid will double the initial rate of mass loss.