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English Translations » 化工分析圈 » 【Daily Question】Chemical Analysis Edition, 4/24/2021

【Daily Question】Chemical Analysis Edition, 4/24/2021

2021-04-24View Original

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This post was last edited by zjp on 2021-4-24 10:20. Multiple-choice question: Which of the following options is incorrect? (). A. Decompose barium sulfate (BaSO4) using sodium carbonate as a flux. B. Use a porcelain crucible when sodium peroxide is used as a flux. C. Use sulfuric acid as a solvent for determining phosphorus in steel. D. Use a platinum crucible when sodium hydroxide is used as a solvent. Answers: B, C, D
Reply #22021-06-07
B. Porcelain crucibles are used when sodium peroxide is used as a flux. C. Sulfuric acid is used as a solvent for determining phosphorus in steel. D. Platinum crucibles are used when sodium hydroxide is used as a solvent

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Translated at 2026-07-23 19:21:48

Original: https://bbs.hcbbs.com/thread-3196597-1-1.html

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