In standard eudiometric (gas analysis) experiments, specific absorbent reagents are used to selectiv — States of Matter and Gaseous State Chemistry Question
Question
In standard eudiometric (gas analysis) experiments, specific absorbent reagents are used to selectively remove particular gases from a mixture. Which of the following correctly identifies the absorbent specifically used to rapidly and completely absorb Carbon Dioxide ($CO_2$) gas?
Answer: C
💡 Solution & Explanation
Concentrated aqueous $KOH$ (Potassium Hydroxide) strongly and selectively absorbs $CO_2$ to form $K_2CO_3$. Alkaline pyrogallol is used to absorb $O_2$. Ammoniacal cuprous chloride is specifically used to absorb Carbon Monoxide ($CO$). Anhydrous $CaCl_2$ is a desiccant used to absorb water vapour.
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