Given the molecular formula $C_6{H}_{10}$, how many degrees of unsaturation does this molecule have?

• A. $3$
• B. $1$
• C. $2$
• D. $4$

Answer: (A)

Verified step by step guidance

1. Identify the molecular formula given: C6H10.
2. Recall the formula for degrees of unsaturation (also called double bond equivalents, DBE), which is: \(\text{DBE} = \frac{2C + 2 - H}{2}\), 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: \(\text{DBE} = \frac{2 \times 6 + 2 - 10}{2}\).
4. Simplify the numerator: calculate \$2 \times 6 = 12$, then add 2 to get 14, and subtract 10 to get 4.
5. Divide the result by 2 to find the degrees of unsaturation: \(\frac{4}{2}\).