`FeSO_(4)` on heating gives

Options

A. `SO_(2)`and `SO_(3)`
B. `SO_(2)` only
C. `SO_(3)`only
D. `SO_(2)`, and `O_(3)`

Answer

To determine what happens when `FeSO4` (ferrous sulfate) is heated, we can analyze the thermal decomposition reaction of ferrous sulfate. Here’s the step-by-step solution:

### Step 1: Write the formula for ferrous sulfate
The chemical formula for ferrous sulfate is `FeSO4`.

### Step 2: Understand the heating process
When `FeSO4` is heated, it undergoes thermal decomposition. This means that the compound breaks down into simpler substances upon heating.

### Step 3: Identify the products of the reaction
Upon heating, `FeSO4` decomposes to form:
- Ferric oxide (`Fe2O3`)
- Sulfur dioxide (`SO2`)
- Sulfur trioxide (`SO3`)

### Step 4: Write the balanced chemical equation
The balanced equation for the decomposition of ferrous sulfate can be represented as:
\[ 2 \, FeSO4 \, \text{(s)} \rightarrow Fe2O3 \, \text{(s)} + 2 \, SO2 \, \text{(g)} + SO3 \, \text{(g)} \]

### Step 5: Analyze the options given
The options provided are:
1. SO2 and SO3
2. SO2 only
3. SO3 only
4. SO2 and O3

From our balanced equation, we see that both `SO2` and `SO3` are produced during the heating of `FeSO4`.

### Step 6: Select the correct answer
The correct answer is:
**SO2 and SO3** (Option 1).

### Summary
When `FeSO4` is heated, it decomposes to yield `Fe2O3`, `SO2`, and `SO3`. Therefore, the answer is that heating `FeSO4` gives both `SO2` and `SO3`.

---