Combustion analysis of C,H,and S converts each element into nonmetal oxide for analysis.Combustion analysis of O requires a different approach.Which of the steps below is(are) not required or false for combustion analysis for O?
I Sample is thermally heated to decompose the compound in the absence of O₂.
II Gaseous products from pyrolysis are passed through nickelized carbon at 1 075 ^oC to convert oxygen into CO.
III Gaseous products are sent to GC for analysis.
IV Halogens are converted to HX during pyrolysis,dissolved in water and titrated with silver nitrate.
V Gaseous products from pyrolysis are passed through nickelized carbon at 1 075 ^oC to convert oxygen to CO₂.

Question

Quizplus · Accepted Answer

Combustion analysis of oxygen does not require step II where gaseous products are passed through nickelized carbon to convert oxygen into CO. Combustion analysis of oxygen requires a different method where the sample is exposed to an oxygen-rich environment and the combustion products are analyzed using infrared spectroscopy. Therefore, options D and E are also incorrect as they include step II. Option A is incorrect as it includes step III which is required for all combustion analyses. Option B is incorrect as it includes step IV which is required for halogens, not oxygen. Option C is the best choice as it correctly identifies the steps that are not required for combustion analysis of oxygen.

Combustion Analysis of C,H,and S Converts Each Element into Nonmetal