In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing________________?
Correct answer: A. CO
- A. CO
- B. CO2
- C. O2
- D. H2O
Explanation
Ammoniacal cuprous chloride forms a complex with carbon monoxide and removes it selectively from the flue-gas sample. Carbon dioxide is absorbed by alkali, while oxygen is absorbed by alkaline pyrogallol in Orsat analysis.
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