Question detail
Why is calcium carbonate commonly used to neutralize acidity in various applications?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Group 2, the alkaline earth metals
Question
- A. It is a strong acid that reacts with bases.
- B. It produces carbon dioxide gas when reacting with acids.
- C. It is highly soluble in water, making it effective.
- D. It forms a stable compound with acids.
Answer
It produces carbon dioxide gas when reacting with acids.
Explanation
The cause is that calcium carbonate reacts with acids to produce carbon dioxide gas. The mechanism involves the acid donating protons to the carbonate ions, resulting in the formation of carbon dioxide and water. The effect is the neutralization of the acid, which raises the pH of the solution. Consequently, this property makes calcium carbonate useful in antacid formulations and other applications where acidity needs to be controlled.
Common mistake
Misunderstanding Barium Sulfate's Safety
Students often believe that barium sulfate is safe to use in medicine because it is a barium compound, overlooking its toxicity.
Barium sulfate is used in medicine because it is insoluble in water, preventing it from being absorbed into the bloodstream, thus minimizing toxicity while allowing it to be used as a contrast agent in medical imaging.
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