CHEM 471 Midterm: CHEM 471 UMass Amherst Exam3 2004
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Page 1 of 3 fumarate(aq) + h2o(l) malate(aq) Name:____________________________ (please print clearly on all pages: an important metabolic step is the conversion of fumarate to malate. In aqueous solution, fumarase (an enzyme) allows equilibrium to be attained. At 25 c the equilibrium constant k = Name:____________________________ (please print clearly on all pages: if k = 8. 0 at 35 c, calculate the standard enthalpy change for the reaction. You may assume that the enthalpy is independent of temperature. If you don"t have time to finish this, describe how you would approach the problem. Name:____________________________ (please print clearly on all pages: in the tca cycle, malate is converted to oxaloacetate by the reduction of nad+ to nadh. The electrons from nadh are subsequently fed into the electron transport chain (eventually to. Nad+ + h+ + 2 e- nadh oxaloacetate + 2 h+ + 2 e- malate.
