AP Chemistry
6.7 Bond Enthalpies
The combustion of ethane gas is represented by the following equation.
\[\text{C}_2\text{H}_6(g) + \dfrac{7}{2}\text{O}_2(g) \rightarrow 2\text{CO}_2(g) + 3\text{H}_2\text{O}(g)\]
Based on the bond enthalpy data in the table, what is the estimated standard enthalpy of combustion, \(\Delta H_{\text{comb}}^\circ\), for \(1\text{ mol}\) of \(\text{C}_2\text{H}_6(g)\)?
\[\text{C}_2\text{H}_6(g) + \dfrac{7}{2}\text{O}_2(g) \rightarrow 2\text{CO}_2(g) + 3\text{H}_2\text{O}(g)\]
| Bond | Average bond enthalpy (\(\text{kJ/mol}\)) |
|---|---|
| \(\text{C}-\text{C}\) | \(350\) |
| \(\text{C}-\text{H}\) | \(410\) |
| \(\text{O}=\text{O}\) | \(500\) |
| \(\text{C}=\text{O}\) | \(800\) |
| \(\text{O}-\text{H}\) | \(460\) |
Based on the bond enthalpy data in the table, what is the estimated standard enthalpy of combustion, \(\Delta H_{\text{comb}}^\circ\), for \(1\text{ mol}\) of \(\text{C}_2\text{H}_6(g)\)?
Similar Questions
Tools for a 5
AP aligned mock tests to help you get a 5.
With grading, adaptive explanations, and more.
Find a Quiz
Find, solve, and grade every AP FRQ ever.
Find an FRQ
Stuck on AP Chemistry? Get unstuck with an AP specialist.1 to 1 tutors who know the exam inside out. Understand weeks of material in a single session.Book a SessionSee all our elite tutors
Learn AP Physics from scratch, quickly. This is the only course you'll need for the year.
A self-paced course with everything you need to get a 5. Trusted by over 15,000 students and 200+ schools. Learn fast, or we'll refund your purchase, backed by our 100% satisfaction guarantee.
Explore the Course