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Question
no. 2
Q2. When carbon di oxide is passed through a solution A it turns milky, B. On further passing carbon di oxide it turns transparent again, C. Identity A, B, C.
Q2. When carbon di oxide is passed through a solution A it turns milky, B. On further passing carbon di oxide it turns transparent again, C. Identity A, B, C.
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Solution
Dear Student,
Lime water is calcium hydroxide (Ca(OH)2. When carbon dioxide is passed into it, it turns milky because of the formation of calcium carbonate (CaCO3). The reaction involved is as follows,
Ca(OH)2 + CO2 → CaCO3 + H2O
When CO 2 is passed in excess quantity. the milkiness of the solution disappears due to the formation of Ca(HCO3)2
CaCO3 + H2O + CO2 ------------------> Ca(HCO3)2
A: lime water
B: Calcium carbonate
C: Calcium bicarbonate
Hope this answers your question,
Cheers!!
Dear Student,
Lime water is calcium hydroxide (Ca(OH)2. When carbon dioxide is passed into it, it turns milky because of the formation of calcium carbonate (CaCO3). The reaction involved is as follows,
Ca(OH)2 + CO2 → CaCO3 + H2O
When CO 2 is passed in excess quantity. the milkiness of the solution disappears due to the formation of Ca(HCO3)2
CaCO3 + H2O + CO2 ------------------> Ca(HCO3)2
A: lime water
B: Calcium carbonate
C: Calcium bicarbonate
Hope this answers your question,
Cheers!!
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