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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

—Potassium dichromate(VI) in dilute sulfuric acid can oxidise: i primary alcohols to produce aldehydes (which give a positive

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.

ConceptA-Level Edexcel Chemistry AS