Chlorine water oxidises thiosulphates to:

Options

A. Sulphate
B. Persulphate
C. Sulphide
D. None of the above

Answer

To solve the question "Chlorine water oxidises thiosulphates to:", we need to analyze the reaction between chlorine water and thiosulphate ions.

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactant in this case is thiosulphate, which can be represented as sodium thiosulphate (Na2S2O3) in its common form.

2. **Understand the Role of Chlorine Water**:
- Chlorine water (a solution of chlorine in water) acts as an oxidizing agent. This means it has the ability to accept electrons from other substances.

3. **Write the Reaction**:
- When chlorine water reacts with sodium thiosulphate, it oxidizes the thiosulphate ions. The general reaction can be represented as:
\[ \text{Cl}_2 + \text{Na}_2\text{S}_2\text{O}_3 \rightarrow \text{Na}_2\text{SO}_4 + \text{S} + 2\text{HCl} \]
- In this reaction, sodium thiosulphate is converted into sodium sulfate, elemental sulfur, and hydrochloric acid.

4. **Identify the Products**:
- From the reaction, we can see that one of the products formed is sodium sulfate (Na2SO4), which is a sulfate.

5. **Conclusion**:
- Therefore, chlorine water oxidizes thiosulphates to sulfate. The correct answer to the question is **sulfate**.

### Final Answer:
Chlorine water oxidizes thiosulphates to **sulfate**.

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