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Why does the colour of copper sulphate s...

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

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### Step-by-Step Solution: 1. **Understanding the Reactivity Series**: - The reactivity series is a list of metals arranged in order of decreasing reactivity. Metals higher in the series can displace those lower in the series from their compounds. 2. **Identifying the Metals Involved**: - In this scenario, we have two metals: iron (Fe) and copper (Cu). According to the reactivity series, iron is more reactive than copper. ...
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