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On passing CO2 to time water for a longer time the milkiness disappears due to the
- a)formation of CaO
- b)formation of Ca(OH)2
- c)formation of CaCO3
- d)formation of water soluble Ca(HCO3)2
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
On passingCO2 to time water for a longer time the milkiness disappears...
Explanation:
On passing CO2 to lime water for a longer time, the milkiness disappears due to the formation of water-soluble Ca(HCO3)2. Let's break down the explanation into bullet points:
- Lime water, also known as calcium hydroxide (Ca(OH)2), is a clear, colorless solution.
- When carbon dioxide (CO2) is passed through lime water, a chemical reaction occurs.
- The CO2 reacts with the calcium hydroxide to form calcium carbonate (CaCO3), which is insoluble in water.
- The reaction can be represented by the following equation: Ca(OH)2 + CO2 → CaCO3 + H2O.
- Initially, the formation of calcium carbonate results in the milkiness or turbidity observed in lime water.
- However, if CO2 is continuously passed through lime water for a longer time, the milkiness eventually disappears.
- This is because the calcium carbonate reacts further with CO2 to form water-soluble calcium bicarbonate (Ca(HCO3)2).
- The reaction can be represented by the following equation: CaCO3 + CO2 + H2O → Ca(HCO3)2.
- The formation of water-soluble calcium bicarbonate leads to the disappearance of milkiness and the formation of a clear solution.
Therefore, the correct answer is D: formation of water-soluble Ca(HCO3)2.
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On passing CO2 to lime water for a longer time, the milkiness disappears due to the formation of water-soluble Ca(HCO3)2. Let's break down the explanation into bullet points:
- Lime water, also known as calcium hydroxide (Ca(OH)2), is a clear, colorless solution.
- When carbon dioxide (CO2) is passed through lime water, a chemical reaction occurs.
- The CO2 reacts with the calcium hydroxide to form calcium carbonate (CaCO3), which is insoluble in water.
- The reaction can be represented by the following equation: Ca(OH)2 + CO2 → CaCO3 + H2O.
- Initially, the formation of calcium carbonate results in the milkiness or turbidity observed in lime water.
- However, if CO2 is continuously passed through lime water for a longer time, the milkiness eventually disappears.
- This is because the calcium carbonate reacts further with CO2 to form water-soluble calcium bicarbonate (Ca(HCO3)2).
- The reaction can be represented by the following equation: CaCO3 + CO2 + H2O → Ca(HCO3)2.
- The formation of water-soluble calcium bicarbonate leads to the disappearance of milkiness and the formation of a clear solution.
Therefore, the correct answer is D: formation of water-soluble Ca(HCO3)2.
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On passingCO2 to time water for a longer time the milkiness disappears due to thea)formation of CaOb)formation ofCa(OH)2c)formation ofCaCO3d)formation of water solubleCa(HCO3)2Correct answer is option 'D'. Can you explain this answer?
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