In Liebig's combustion method, which absorbents are used strictly in series to sequentially trap fir — Practical Organic Chemistry and Purification Chemistry Question
Question
In Liebig's combustion method, which absorbents are used strictly in series to sequentially trap $H_2O$ first and then $CO_2$?
Answer: B
💡 Solution & Explanation
The $CaCl_2$ U-tube must come first to absorb moisture. If $KOH$ were first, it would absorb both $CO_2$ and $H_2O$, ruining the individual gravimetric estimations.
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