2014 · Q25
When carbon dioxide is passed through lime water, the solution turns milky, but, on prolonged passage, the solution turns clear. This is because
General KnowledgeChemistry
- Athe calcium carbonate formed initially is converted to soluble calcium bicarbonate on passage of more carbon dioxide
- Bthe reaction is reversible and lime water is regenerated
- Cthe calcium bicarbonate formed initially is converted to soluble calcium carbonate on passage of more carbon dioxide
- Dthe initially formed insoluble compound is soluble in carbonic acid
Explanation
Excess CO2 converts insoluble calcium carbonate into soluble calcium bicarbonate.