The calcium infusion consisted of 4 gm of calcium carbonate in 120 ml of water titrated to pH 3 with concentrated hydrochloric acid. The control solution was 4 gm of sodium bicarbonate in 120 ml ...

Hydrochloric acid has a low pH value (1-2 ... boiling tube side by side in a test-tube rack. Carefully add the calcium carbonate to the acid – record your observations, especially any colour ...

Calcium carbonate is a common supplement for people with low calcium levels. It’s also useful as an antacid to manage uncomfortable digestive symptoms. Calcium carbonate (CaCO3) is a compound ...