Medium
Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?
(N/A) Carbon dioxide $(CO_2)$ is an acidic gas,while potassium hydroxide $(KOH)$ is a strong base. When $CO_2$ passes through the $KOH$ solution,it reacts to form potassium carbonate and water,effectively absorbing the gas:
$2KOH + CO_{2(g)} \rightarrow K_2CO_{3(s)} + H_2O_{(l)}$
This reaction allows for the quantitative determination of the mass of $CO_2$ produced,which is essential for calculating the percentage of carbon in the organic compound.
$2KOH + CO_{2(g)} \rightarrow K_2CO_{3(s)} + H_2O_{(l)}$
This reaction allows for the quantitative determination of the mass of $CO_2$ produced,which is essential for calculating the percentage of carbon in the organic compound.
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