What is the colour of aluminium salts ?

Options

A. Red
B. Green
C. White
D. Colourless

Explanation

To determine the color of aluminum salts, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Aluminum Salts**: Aluminum salts typically refer to compounds that contain aluminum ions (Al³⁺) combined with various anions.

2. **General Color of Aluminum Salts**: In general, aluminum salts are known to be colorless. This means that when you look at a solution of aluminum salts, it will not exhibit any color.

3. **Specific Examples**:
- When aluminum combines with oxide ions (O²⁻), it forms aluminum oxide (Al₂O₃), which is white in color.
- When aluminum combines with sulfate ions (SO₄²⁻), it forms aluminum sulfate (Al₂(SO₄)₃), which is also white in color.

4. **Conclusion**: Therefore, while aluminum salts in their pure form are colorless, some specific compounds like aluminum oxide and aluminum sulfate are white. However, the question specifically asks about aluminum salts in general, which are colorless.

### Final Answer:
The color of aluminum salts is colorless.

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