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7 Cards in this Set
- Front
- Back
There are 3 classifications for lalcohols: |
1) Primary (1º). 2) Secondary (2º). 3) Tertiary (3º). |
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Oxidising alcohols: 1) We use? – Results for 1º, 2º & 3º. |
1) Acidified Potassium Dichromate. – 1º => Aldehyde => Carboxylic Acid. – 2º => Ketone => No further oxidation. – 3º => Doesn't Oxidise. |
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To go from an aldehyde to a carboxylic acid, or straight to a carboxylic acid: |
We will heat the solution under reflux. |
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When alcohols are oxidised using acidified dichromate:
– Observation? |
The observation we see is from orange to green (the Cr goes from +6 - +3).
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To test between Aldehydes and Ketones: |
Can use either Tollen's Reagent or Fehling's solution. |
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Tollen's reagent: 1) Complex? 2) Observation? |
1) [Ag(NH3)2]+. 2) A silver mirror will form around the test tube. |
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Fehling's Solution: 1) Is? 2) Observation? |
1) Blue coppeer (II) ions. 2) A brick red ppt will form. |