Zinc is added to copper sulfate solution. What do you expect to observe and why?
Answer and explanation
Correct answer: A. Copper forms on the zinc
- Step 1: Zinc is above copper in the reactivity series.
- Step 2: Zinc displaces copper from solution, producing copper metal and zinc sulfate.
Answer
Copper forms on the zinc.
Why not the others: Zinc sulfate forms a blue solution: the blue colour is from copper ions. Nothing happens: zinc is more reactive than copper. Hydrogen gas bubbles off: no acid is present.
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