Given the molecular formula $C_6{H}_6$, calculate the degree of unsaturation (DU) for this molecule.

• A. $2$
• B. $3$
• C. $4$
• D. $1$

Answer: (C)

Verified step by step guidance

1. Identify the molecular formula given: \(C_6H_6\).
2. Recall the formula for calculating the degree of unsaturation (DU), which is: \(DU = \frac{2C + 2 - H}{2}\), where \(C\) is the number of carbons and \(H\) is the number of hydrogens.
3. Substitute the values from the molecular formula into the formula: \(DU = \frac{2 \times 6 + 2 - 6}{2}\).
4. Simplify the numerator first: \$2 \times 6 = 12\(, so the numerator becomes \)12 + 2 - 6$.
5. Calculate the final DU by dividing the simplified numerator by 2: \(DU = \frac{12 + 2 - 6}{2}\).