CH-1741
Oxidising and reducing agents
Chemistry · Secondary 4 · Easy · Oxidising and reducing agents
A colourless aqueous solution of an aldehyde is warmed with acidified potassium manganate(VII) solution. Which observation is expected?
- Purple solution turns colourless
- Colourless solution turns purple
- Brown precipitate forms
- Effervescence of a colourless gas is seen
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