Chemistry WCH16/01 October 2023
Edexcel
International AS/A Level
Chemistry (WCH)
Oct
2023
2. Functional groups in compound B.
3. Observations for tests with sodium hydrogencarbonate, acidified potassium dichromate, 2,4-dinitrophenylhydrazine, Fehling′s solution, and iodine solution.
4. Explanation of why water is used as a solvent for ethanedioic acid extraction.
5. Detection of end-points in titration with sodium hydroxide and cerium(IV) sulfate.
6. Percentage yield calculation and reasoning for less than 100% yield in nitration of methyl benzoate.
معلم موافق رایگان بودن است.
1. Pungent gas produced from calcium oxide and its reaction with damp litmus paper.2. Functional groups in compound B.
3. Observations for tests with sodium hydrogencarbonate, acidified potassium dichromate, 2,4-dinitrophenylhydrazine, Fehling′s solution, and iodine solution.
4. Explanation of why water is used as a solvent for ethanedioic acid extraction.
5. Detection of end-points in titration with sodium hydroxide and cerium(IV) sulfate.
6. Percentage yield calculation and reasoning for less than 100% yield in nitration of methyl benzoate.
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