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Examen

A-Level Chemistry, Specimen Paper question and answers update 2025
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7

abril 2025

2024/2025

A+
A-Level Chemistry, Specimen Paper question and answers update 2025 Describe how the student could use chemical tests to confirm that the liquid contained ethanal and did not contain ethanoic acid. - ANSWERReagent to confirm the presence of ethanal: Add Tollens' reagent OR Add Fehling's solution; Warm; Result with Tollen's reagent: Silver mirror OR Result with Fehling's solution: Red precipitate; Reagent to confirm the absence of ethanoic acid: Add sodium hydrogenc...
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