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【Daily Question】Chemical Analysis Version 2020.2.12

2020-02-12View Original

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This post was last edited by zjp on 2020-2-12 09:30. Multiple-choice question: In the method of determining total sulfur using the Kjeldahl method, what is the composition of the Kjeldahl reagent? () A、1 part MgO + 2 parts Na2CO3 B、2 parts MgO + 1 part Na2CO3 C、1 part MgO + 2 parts Ca(OH)2 D、2 parts MgO + 1 part Ca(OH)2 B

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