CH-1552
Reactivity series
Chemistry · Secondary 4 · Medium · Reactivity series
Metal Q is more reactive than copper. A strip of metal Q is placed into aqueous copper(II) sulfate.
Which observation is correct?
Which observation is correct?
- Brown solid forms and the blue solution becomes colourless
- Effervescence is seen and the blue solution remains unchanged
- No visible change is seen
- Blue crystals form and the solution turns green
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