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Edexcel IAL Chemistry 6.P15 interpret chemical test observations

Use observations as evidence: bromine water decolourisation points to C=C, effervescence supports carboxylic acid behaviour and ion-test results fix salt formulae.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
A2

Exam points

  • Link bromine water decolourisation to C=C or alkene functional groups.
  • Use effervescence and test observations to identify carboxylic acids or ions.
  • Name salts and solids from ion evidence, including copper(II) chloride, CuO or CuCrO4.

6.P15—Tests for ions and gases question 1

A student investigates two aqueous solutions, each containing a salt.
Each salt has one cation and one anion.
Solution A is blue. Solution B is orange.

Table for Question 6.P15—Tests for ions and gases question 1 — Edexcel A-Level Chemistry A2
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