Calculating enthalpy change in an oxidation ratio
Not what you're looking for?
What is deltaE for the oxidation of ubiquinol by cytochrome c when the ratio of [QH2]/[Q] is 10 and the ratio of [cyt c3+]/[cyt c2+] is 5?
cytochrome c (Fe3+) + e- <---------> cytochrome c (Fe2+) E'o = 0.254V
Ubiquinone + 2H+ + 2e- <-----------> ubiquinol + H2 E'o = 0.045V
Purchase this Solution
Solution Summary
This solution is provided in 356 words in an attached .doc file. It discusses Nernst equations and how this relates to the problem, as well as explains step-by-step how to find the change in enthalpy.
Solution Preview
What is ΔE for the oxidation of ubiquinol by cytochrome c when the ratio of [QH2]/[Q] is 10 and the ratio of [cyt c3+]/[cyt c2+] is 5?
cytochrome c (Fe3+) + e- <---------> cytochrome c (Fe2+) E'˚ = 0.254V
Ubiquinone + 2H+ + 2e- <-----------> ubiquinol + H2 E'˚ = 0.045V
The electrode potential, because of its measure of the chemical driving of the half reaction, is affected by concentration. Thus the tendency of the cytochrome c to oxidize ubiquinol is driven by the concentrations of the ...
Purchase this Solution
Free BrainMass Quizzes
Identifying Variables in Science Experiments, Part 2
Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.
Basic Concepts in Neuroscience
This quiz provides a review of the basic concepts in neuroscience.
Light and Sight Vocabulary
This quiz introduces basic definitions of vocabulary related to light and how human eyes. This information is important for an understanding of sight.
Pregnancy Knowledge
How much do you know about being pregnant? Test your Pregnancy IQ with this quiz!
Birth 101
Do you know about childbirth? Find out with this quiz.