10.18—Potassium dichromate(VI) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive
- Syllabus
- 2017
- Objective
- 10.18
- Level
- AS
Understand that potassium dichromate(VI) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive result with Benedict’s or Fehling’s solution) if the product is distilled as it forms ii primary alcohols to produce carboxylic acids (which give a positive result with sodium carbonate or sodium hydrogencarbonate) if the reagents are heated under reflux iii secondary alcohols to produce ketones In equations, the oxidising agent can be represented by [O].
Use —potassium dichromate(vi) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive to connect the rule to the data and decision in the question.
This matters because —potassium dichromate(vi) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.
Example: apply —potassium dichromate(vi) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive to one small, clearly defined case, show the key step or comparison, and explain the result in words.
Boundary: —Potassium dichromate(VI) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.