Question detail
Why can barium sulfate be used in medicine despite the toxicity of other barium compounds?
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. Barium sulfate is insoluble in water, preventing absorption in the body.
- B. Barium sulfate is a strong acid that neutralizes toxins.
- C. Barium sulfate is a natural remedy that enhances healing.
- D. Barium sulfate has a low molecular weight, making it safe.
Answer
Barium sulfate is insoluble in water, preventing absorption in the body.
Explanation
The cause is that barium sulfate is insoluble in water. This means that when it is ingested, it does not dissolve and is not absorbed into the bloodstream. The effect is that it can safely pass through the digestive system without causing toxicity. Consequently, it can be used in medical imaging as a contrast agent without the risk of barium poisoning.
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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