Problem: Calcium carbonate, CaCO3, is often used as a dietary calcium supplement for bone health. Although CaCO3(s)  is insoluble in water, it can be taken orally to allow for the delivery of Ca2+(aq) ions to the musculoskeletal system.Why is this the case? [Hint: Recall the reactions of metal carbonates discussed in Section 4.3 in the textbook.]

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We have to explain why calcium carbonate (CaCO3), although water-insoluble, can be used to deliver calcium ions (Ca2+) to the musculoskeletal system.


Calcium carbonate (CaCO3), as a calcium supplement, is taken orally. When taken orally, calcium carbonate enters the stomach that contains hydrochloric acid (HCl).

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Problem Details

Calcium carbonate, CaCO3, is often used as a dietary calcium supplement for bone health. Although CaCO3(s)  is insoluble in water, it can be taken orally to allow for the delivery of Ca2+(aq) ions to the musculoskeletal system.

Why is this the case? [Hint: Recall the reactions of metal carbonates discussed in Section 4.3 in the textbook.]

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Our tutors have indicated that to solve this problem you will need to apply the Balancing Redox Reactions concept. You can view video lessons to learn Balancing Redox Reactions. Or if you need more Balancing Redox Reactions practice, you can also practice Balancing Redox Reactions practice problems.