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Heavy water is...

Heavy water is

A

(A) `H_(2)O` with dissolved `Mg(HCO_(3))_(2)`

B

(B) `D_(2)O`

C

(C) `D_(2)O` with heavy metal impurities

D

(D) `H_(2)O` with `CaCO_(3)`

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Water Composition**: - Regular water is chemically represented as H₂O, where H stands for hydrogen and O stands for oxygen. 2. **Identifying Heavy Water**: - Heavy water is a specific type of water that contains a different isotope of hydrogen. Instead of the common hydrogen isotope (protium, ¹H), heavy water contains deuterium (²H), which is denoted as D. 3. **Chemical Formula of Heavy Water**: - The chemical formula for heavy water is D₂O. This indicates that it consists of two deuterium atoms and one oxygen atom. 4. **Analyzing the Options**: - Option A: H₂O with magnesium hydrogen carbonate is hard water, not heavy water. - Option B: D₂O is the correct representation of heavy water. - Option C: D₂O with heavy metal impurity is incorrect; heavy water itself is simply D₂O. - Option D: Similar to option A, this refers to hard water, not heavy water. 5. **Conclusion**: - The correct answer is option B, which states that heavy water is D₂O.
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