CH-1797
Oxidising and reducing agents
Chemistry · Secondary 4 · Easy · Oxidising and reducing agents
A student wants to test for a reducing agent using acidified potassium manganate(VII) solution.
Which observation shows that a reducing agent is present?
Which observation shows that a reducing agent is present?
- Colourless to purple
- Purple to colourless
- Colourless to brown
- Brown to colourless
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