In Liebig's combustion method for estimating carbon and hydrogen, the correct sequence of U-tubes used for absorbing the evolved gases is: | Practical Organic Chemistry and Purification — Chem-Mantra | Chem-Mantra

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Question

In Liebig's combustion method for estimating carbon and hydrogen, the correct sequence of U-tubes used for absorbing the evolved gases is:

Answer: B

💡 Solution & Explanation

The anhydrous $CaCl_2$ tube must come first to absorb $H_2O$ vapor. If $KOH$ is placed first, it will absorb both $H_2O$ and $CO_2$, ruining the estimation.

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