Assertion : `3ClO^(-) rarr ClO_3^(-) +2Cl^(-)` is an example of dissociation reaction.
Reason : `ClO^(-)` gets oxidised as well as reduced.

Options

A. Assertion and reason both are correct statements and reason is correct explanation for assertion.
B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C. Assertion is correct statement but reason is wrong statement.
D. Assertion is wrong statement but reason is correct statement.

Answer

To solve the assertion and reason question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states that the reaction \(3ClO^{-} \rightarrow ClO_{3}^{-} + 2Cl^{-}\) is an example of a dissociation reaction.

**Dissociation Reaction Definition**: A dissociation reaction is a process in which a compound breaks down into two or more simpler substances, typically ions or smaller molecules.

In this case, the reaction involves the conversion of \(ClO^{-}\) into \(ClO_{3}^{-}\) and \(Cl^{-}\). This does not fit the definition of a dissociation reaction, as it is not simply breaking down into smaller components but involves a change in oxidation states.

### Step 2: Analyze the Reason
The reason states that \(ClO^{-}\) gets oxidized as well as reduced.

**Oxidation and Reduction**:
- Oxidation is the loss of electrons (increase in oxidation state).
- Reduction is the gain of electrons (decrease in oxidation state).

To verify this, we need to determine the oxidation states of chlorine in the reactants and products:
- In \(ClO^{-}\), let the oxidation state of Cl be \(+1\).
- In \(ClO_{3}^{-}\), the oxidation state of Cl can be calculated as follows:
\[ x + 3(-2) = -1 \implies x - 6 = -1 \implies x = +5 \]
- In \(Cl^{-}\), the oxidation state of Cl is \(-1\).

Now, we can see:
- \(Cl\) in \(ClO^{-}\) goes from \(+1\) to \(+5\) (oxidation).
- \(Cl\) in \(ClO^{-}\) goes from \(+1\) to \(-1\) (reduction).

Since \(ClO^{-}\) is both oxidized and reduced, the reason is correct.

### Conclusion
- The assertion is **false** because the reaction is not a dissociation reaction.
- The reason is **true** because \(ClO^{-}\) undergoes both oxidation and reduction.

Thus, the correct answer is:
**Assertion is wrong, but reason is correct.**

### Final Answer
**Option 4: Assertion is wrong, reason is correct.**

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