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Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?

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Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?

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CO2 is acidic in nature and therefore it reacts with the strong base KOH to form K2CO3 : 

2KOH + CO2 – K2CO2 + H2O

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