Which of the following statements correctly describe the principles and apparatus setup for the quan — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

The compound is oxidized by $CuO$ to $CO_2$ and $H_2O$. $H_2O$ is absorbed by anhydrous $CaCl_2$ (or magnesium perchlorate), and $CO_2$ is absorbed by $KOH$. Option D is incorrect because the $CaCl_2$ tube must always be placed first. If $KOH$ is placed first, it will absorb both $CO_2$ and $H_2O$, ruining the individual mass measurements.