Valence of sulphur in sulphuric acid is

Options

A. 2
B. 4
C. 6
D. 8

Explanation

To determine the valence of sulfur in sulfuric acid (H₂SO₄), we can follow these steps:

### Step 1: Identify the chemical formula of sulfuric acid.
The chemical formula for sulfuric acid is H₂SO₄.

### Step 2: Assign oxidation states to the elements in sulfuric acid.
- Hydrogen (H) typically has an oxidation state of +1.
- Oxygen (O) typically has an oxidation state of -2.

### Step 3: Set up the equation based on the overall charge of the molecule.
Since sulfuric acid is a neutral compound, the sum of the oxidation states must equal zero. Let the oxidation state of sulfur (S) be represented as \( X \).

The equation can be set up as follows:
\[ 2(+1) + X + 4(-2) = 0 \]

### Step 4: Simplify the equation.
Calculating the contributions from hydrogen and oxygen:
- Contribution from hydrogen: \( 2 \times +1 = +2 \)
- Contribution from oxygen: \( 4 \times -2 = -8 \)

Now substituting these values into the equation:
\[ 2 + X - 8 = 0 \]

### Step 5: Solve for the oxidation state of sulfur.
Rearranging the equation gives:
\[ X - 6 = 0 \]
\[ X = +6 \]

### Step 6: Conclusion.
The oxidation state of sulfur in sulfuric acid (H₂SO₄) is +6. Therefore, the valence of sulfur in sulfuric acid is 6.

---