Question

Considering that calcium carbonate is insoluble in water, how can it be used as a dietary supplement?

• A. The energy produced from cellular respiration allows it to dissolve better.
• B. Stomach acid reacts with the calcium carbonate, leading to calcium ions in solution and the production of water and carbon dioxide.
• C. The sodium-potassium pump absorbs the smaller calcium ions while ejecting the carbonate ions.
• D. The grinding of the calcium carbonate in the mouth causes a larger surface area leading to a higher reaction rate and increased solubility.

Answer 1

The correct option is B Stomach acid reacts with the calcium carbonate, leading to calcium ions in solution and the production of water and carbon dioxide.

Calcium carbonate is used as a dietary supplement to provide strength to bones; so, the stomach acid reacts with calcium carbonate, leading to the calcium ion solution and produce water and carbon dioxide.