Fill in the table by working out the total mass change at each time for both experiments.
Construct the equation for the reaction of calcium carbonate with hydrochloric acid.
Suggest why the mass of the flask and its contents falls as the reaction continues.
On the grid, plot the points for each experiment, draw a smooth curve through each data set and label the curves.
Using your graph, what total change in mass is shown in experiment 1 after $75$ seconds?
Using your graph, what is the mass of the flask and its contents in experiment 2 after $45$ seconds?
State and explain how using powdered marble instead of marble lumps in experiment 2 changes the reaction rate.
Calculate the mass of marble left after reaction with $30.0\,\text{cm}^3$ of $1.20\,\text{mol dm}^{-3}$ hydrochloric acid.