Write the empirical formula of (i) glucose (ii) sucrose.

Answer

To find the empirical formulas of glucose and sucrose, we will follow these steps:

### Step 1: Identify the Molecular Formulas
- The molecular formula of glucose is **C₆H₁₂O₆**.
- The molecular formula of sucrose is **C₁₂H₂₂O₁₁**.

### Step 2: Determine the Empirical Formula for Glucose
1. **Write down the molecular formula**: C₆H₁₂O₆.
2. **Find the greatest common divisor (GCD)** of the subscripts (6, 12, 6). The GCD is 6.
3. **Divide each subscript by the GCD**:
- Carbon: 6 ÷ 6 = 1
- Hydrogen: 12 ÷ 6 = 2
- Oxygen: 6 ÷ 6 = 1
4. **Write the empirical formula**: The empirical formula for glucose is **CH₂O**.

### Step 3: Determine the Empirical Formula for Sucrose
1. **Write down the molecular formula**: C₁₂H₂₂O₁₁.
2. **Find the greatest common divisor (GCD)** of the subscripts (12, 22, 11). The GCD is 1 (since there is no common divisor greater than 1).
3. **Divide each subscript by the GCD**:
- Carbon: 12 ÷ 1 = 12
- Hydrogen: 22 ÷ 1 = 22
- Oxygen: 11 ÷ 1 = 11
4. **Write the empirical formula**: The empirical formula for sucrose is **C₁₂H₂₂O₁₁** (which is the same as the molecular formula).

### Final Answers
- The empirical formula of glucose is **CH₂O**.
- The empirical formula of sucrose is **C₁₂H₂₂O₁₁**.

---