The reaction that occurs on passing carbon dioxide gas through lime water is
- A. \\( CaCO_{3} + H_{2}O + CO_{2} \\rightarrow Ca(HCO_{3})_{2} \\)
- B. \\( Ca(OH)_{2} + CO_{2} \\rightarrow CaCO_{3} + H_{2}O \\) ✓
- C. \\( CaO + CO_{2} \\rightarrow CaCO_{3} \\)
- D. \\( CaCl_{2} + H_{2}O + CO_{2} \\rightarrow CaCO_{3} + 2HCl \\)
Correct Answer: B. \\( Ca(OH)_{2} + CO_{2} \\rightarrow CaCO_{3} + H_{2}O \\)
Explanation
Lime water is calcium hydroxide. When carbon dioxide is passed through it, it turns milky due to the formation of insoluble calcium carbonate.
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