(a)[2]
Describe one different way to monitor the progress of this reaction.
(b)[2]
Describe and explain, using ideas about collisions between particles, how the reaction rate changes when the same mass of calcium carbonate is broken into smaller pieces.
(c)[3]
Describe and explain, using ideas about collisions between particles, how the reaction rate changes when the temperature is increased.
(d)[2]
Calculate the smallest mass of calcium carbonate, in grams, required to make $16.8\,\text{cm}^3$ of carbon dioxide at room temperature and pressure. Give your answer to three significant figures.
(e)[2]
Describe a test for carbon dioxide. State the test and the observation.
(f)[2]
Explain how calcium hydroxide affects the pH of the soil.