The chemical reaction between sulphur dioxide gas and gaseous ozone is best represented by the equations as

Options

A. `3SO_(2)+O_(3)rarr 3SO_(3)`
B. `SO_(2)+O_(3)rarr SO_(3)+O_(2)`
C. `2SO_(2)+O_(3)rarr 2SO_(3)+(O)`
D. `SO_(2)+3O_(3)rarr SO_(3)+4O_(2)`

Answer

To solve the problem of the chemical reaction between sulfur dioxide (SO2) and ozone (O3), we will analyze the reaction step by step.

### Step 1: Identify the Reactants and Products
- **Reactants**: Sulfur dioxide (SO2) and ozone (O3).
- **Products**: The products will be sulfur trioxide (SO3) and possibly oxygen (O2) depending on the reaction.

### Step 2: Determine the Role of Ozone
- Ozone (O3) acts as an oxidizing agent. This means it will oxidize sulfur dioxide (SO2) while itself being reduced.

### Step 3: Analyze the Oxidation States
- In sulfur dioxide (SO2), sulfur has an oxidation state of +4.
- In sulfur trioxide (SO3), sulfur has an oxidation state of +6.
- This indicates that sulfur is being oxidized (its oxidation state increases).

- For ozone (O3), the oxidation state of oxygen is 0.
- In sulfur trioxide (SO3), the oxidation state of oxygen is -2.
- This indicates that ozone is being reduced (its oxidation state decreases).

### Step 4: Write the Unbalanced Reaction
The unbalanced reaction can be written as:
\[ \text{SO2} + \text{O3} \rightarrow \text{SO3} + \text{O2} \]

### Step 5: Balance the Reaction
To balance the reaction, we need to ensure that the number of atoms of each element on the reactant side equals the number on the product side.

1. Start by balancing sulfur:
- We have 1 sulfur atom in SO2 and 1 in SO3. If we have 3 SO2, we will need 3 SO3 to balance sulfur.
- Thus, we write:
\[ 3\text{SO2} + \text{O3} \rightarrow 3\text{SO3} + \text{O2} \]

2. Now, balance the oxygen:
- On the left side, we have 3 (from SO2) + 3 (from O3) = 6 oxygen atoms.
- On the right side, we have 3 (from SO3) + 2 (from O2) = 5 oxygen atoms.
- To balance, we can adjust the coefficients:
\[ 3\text{SO2} + \text{O3} \rightarrow 3\text{SO3} \]
- This shows that the balanced equation is:
\[ 3\text{SO2} + \text{O3} \rightarrow 3\text{SO3} \]

### Final Balanced Equation
The final balanced equation for the reaction between sulfur dioxide and ozone is:
\[ 3\text{SO2} + \text{O3} \rightarrow 3\text{SO3} \]

### Conclusion
The correct option representing the chemical reaction is:
**Option 1: \( 3\text{SO2} + \text{O3} \rightarrow 3\text{SO3} \)**

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