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CBSE Class 10 Answered

Does co2 dissolve readily in limewater or does co2 readily dissolve in koh solution?
Asked by kalpanasingh.ito | 19 Oct, 2019, 07:26: PM
answered-by-expert Expert Answer

When CO2 is passed through lime water for a short duration, it turns lime water milky due to the formation of a white precipitate of calcium carbonate.
 
Ca open parentheses OH close parentheses space plus space CO subscript 2 space end subscript space rightwards arrow space CaCO subscript 3 space space plus space straight H subscript 2 straight O
 
When CO2 is passed through lime water for a long time, then white precipitate of calcium carbonate which was formed initially dissolves due to the formation of soluble calcium hydrogen carbonate and solution becomes clear again.
 
space CO subscript 2 space end subscript space plus space space CaCO subscript 3 space space plus space straight H subscript 2 straight O space rightwards arrow space Ca open parentheses HCO subscript 3 close parentheses subscript 2 space

Answered by Ramandeep | 22 Oct, 2019, 11:56: AM

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