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(A) In the Liebig's method for the quantitative estimation of carbon and hydrogen,the organic compound is burnt in the presence of excess oxygen and c

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$KOH$

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(A) In the Liebig's method for the quantitative estimation of carbon and hydrogen,the organic compound is burnt in the presence of excess oxygen and copper$(II)$ oxide $(CuO)$.The carbon present in the compound is oxidized to $CO_2$,and the hydrogen is oxidized to $H_2O$.The $CO_2$ gas produced is absorbed by a concentrated solution of potassium hydroxide $(KOH)$,while the $H_2O$ vapor is absorbed by anhydrous calcium chloride $(CaCl_2)$.

During the quantitative estimation of $C$ and $H$,the $CO_2$ produced is absorbed in which of the following?

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