Which of the following metals will precipitate copper from copper sulphate solution?

Options

A. Hg
B. Sn
C. Au
D. Pt

Explanation

To determine which metal will precipitate copper from a copper sulfate solution, we can follow these steps:

### Step 1: Understand the Electrochemical Series
The electrochemical series ranks metals based on their reactivity. Metals that are higher in the series can displace metals that are lower in the series from their compounds.

### Step 2: Identify the Position of Copper in the Series
In the electrochemical series, copper (Cu) is positioned between hydrogen and mercury (Hg). This means that metals above copper can displace it, while those below cannot.

### Step 3: Analyze the Given Metals
We have the following metals to consider:
- A: Mercury (Hg)
- B: Tin (Sn)
- C: Gold (Au)
- D: Platinum (Pt)

### Step 4: Check Each Metal's Position Relative to Copper
- **Mercury (Hg)**: Located below copper in the electrochemical series. It cannot displace copper.
- **Tin (Sn)**: Located above copper in the electrochemical series. It can displace copper.
- **Gold (Au)**: Located below copper in the electrochemical series. It cannot displace copper.
- **Platinum (Pt)**: Located below copper in the electrochemical series. It cannot displace copper.

### Step 5: Conclusion
Only tin (Sn) is capable of displacing copper from copper sulfate solution.

### Final Answer
The metal that will precipitate copper from copper sulfate solution is **Tin (B)**.

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