SC-1126
Neutralisation
Lower Sec Science · Secondary 2 · Hard · Neutralisation
A gardener neutralises a patch of acidic soil (pH 4) by adding powdered limestone, which contains calcium carbonate. Which statement best explains what happens during this neutralisation?
- The calcium carbonate reacts with the acid to form a salt, water, and carbon dioxide, making the soil less acidic.
- The calcium carbonate makes the soil more acidic by lowering its pH further.
- The calcium carbonate only dries the soil and does not change its pH.
- The calcium carbonate turns into acid, increasing the amount of acid in the soil.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.