`Na_(2)SO_(3)+H_(2)O_(2) rarr Na_(2)SO_(4) +H_(2)O`, in reaction

Options

A. `H_(2)O_(2)` is bleached
B. `H_(2)O_(2)` is reduced
C. `H_(2)O_(2)` is dehydrated
D. `H_(2)O_(2)` is neither oxidised nor reduced

Explanation

To solve the reaction \( \text{Na}_2\text{SO}_3 + \text{H}_2\text{O}_2 \rightarrow \text{Na}_2\text{SO}_4 + \text{H}_2\text{O} \), we will follow these steps:

### Step 1: Identify the Reactants and Products
The reactants in this reaction are sodium sulfite (\( \text{Na}_2\text{SO}_3 \)) and hydrogen peroxide (\( \text{H}_2\text{O}_2 \)). The products are sodium sulfate (\( \text{Na}_2\text{SO}_4 \)) and water (\( \text{H}_2\text{O} \)).

### Step 2: Write the Balanced Equation
The unbalanced equation is:
\[ \text{Na}_2\text{SO}_3 + \text{H}_2\text{O}_2 \rightarrow \text{Na}_2\text{SO}_4 + \text{H}_2\text{O} \]

To balance the equation, we need to ensure that the number of each type of atom is the same on both sides.

### Step 3: Balance the Sodium (Na) Atoms
In the reactants, there are 2 sodium atoms from \( \text{Na}_2\text{SO}_3 \) and in the products, there are also 2 sodium atoms from \( \text{Na}_2\text{SO}_4 \). The sodium atoms are balanced.

### Step 4: Balance the Sulfur (S) Atoms
There is 1 sulfur atom in \( \text{Na}_2\text{SO}_3 \) and 1 sulfur atom in \( \text{Na}_2\text{SO}_4 \). The sulfur atoms are balanced.

### Step 5: Balance the Oxygen (O) Atoms
In the reactants, we have:
- 3 oxygen atoms from \( \text{Na}_2\text{SO}_3 \)
- 2 oxygen atoms from \( \text{H}_2\text{O}_2 \)

Total = \( 3 + 2 = 5 \) oxygen atoms.

In the products, we have:
- 4 oxygen atoms from \( \text{Na}_2\text{SO}_4 \)
- 1 oxygen atom from \( \text{H}_2\text{O} \)

Total = \( 4 + 1 = 5 \) oxygen atoms.

The oxygen atoms are balanced.

### Step 6: Confirm the Balanced Equation
The balanced equation is:
\[ \text{Na}_2\text{SO}_3 + \text{H}_2\text{O}_2 \rightarrow \text{Na}_2\text{SO}_4 + \text{H}_2\text{O} \]

### Step 7: Conclusion
The reaction shows that sodium sulfite is oxidized to sodium sulfate by hydrogen peroxide, which acts as an oxidizing agent.

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