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How to Differentiate Between Aldehydes And Ketones? (Fehling and Tollens' reagents)
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@Explained Chemistry
The way to distinguish between the aldehydes and ketones relies on how easy aldehydes can be oxidized, while ketones don’t further oxidize.
The two oxidizing reagents Tollens’ reagent and Fehling’s solution can be used to distinguish between the aldehydes and ketones.
First, with aldehydes Tollens’ reagent forms silver mirror of reduced silver; with ketones, nothing happens and the colorless solution of Tollens’ does not change.
When Fehling’s solution is warmed with any aldehyde, it oxidizes the aldehyde into the corresponding carboxylic acid, and the blue copper ions Cu2+ are reduced to the red/orange Cu+ ions. With ketones, no change is observed.
The way to distinguish between the aldehydes and ketones relies on how easy aldehydes can be oxidized, while ketones don’t further oxidize.
The two oxidizing reagents Tollens’ reagent and Fehling’s solution can be used to distinguish between the aldehydes and ketones.
First, with aldehydes Tollens’ reagent forms silver mirror of reduced silver; with ketones, nothing happens and the colorless solution of Tollens’ does not change.
When Fehling’s solution is warmed with any aldehyde, it oxidizes the aldehyde into the corresponding carboxylic acid, and the blue copper ions Cu2+ are reduced to the red/orange Cu+ ions. With ketones, no change is observed.
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Chemistry Explained published this 2:02 video tutorial on August 27, 2020. It has been watched 7,581 times on YouTube.
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- 2:02
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- August 27, 2020
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This tutorial in other languages
- FRComment faire la différence entre Cétones Et Aldéhydes? (réactifs Fehling et Tollens')
- ES¿Cómo diferenciar entre aldehídos y cetonas? (reactivos de Fehling y Tollens')
- PTComo diferenciar entre aldeídos e cetonas? (reagentes de Fehling e Tollens')
- ITCome distinguere tra aldeidi e chetoni? (Fehling e Tollens' reagenti)
- DEWie, um zwischen und -ketone? (Fehling und Tollens' Reagenzien)
- NLDe verschillen tussen de aldehyden en ketonen? (Fehling en Tollens' reagens)
- RUКак Дифференцировать между альдегидов и кетонов? (Фелинга и Толленс реагенты)
- PLJak odróżnić aldehydów i ketonów? (Fehlinga i Tollens' odczynniki)
- JAどのようにアルデヒドおよびケトンを区別するの？ （フェーリングとトレンス試薬）
- ARكيفية التفريق بين الألدهيدات والكيتونات؟ (الكواشف فيهلينغ وتولينز ')
- HIकैसे बीच aldehydes और Ketones अंतर करने के लिए? (Fehling और Tollens 'अभिकर्मकों)
- IDCara Membedakan Antara Aldehida Dan Keton? (Fehling dan Tollens' reagen)