name: 4. Electron transfer in the mitochondrial respiratory chain may be represented by the net reaction equation H20 + NAD* NADH + H* + 02 (a) Calculate AE'° for the net reaction of mitochondrial electron transfer. Use E'° values from Table 13-7. sinag Yn t noroest lierodT ITA did XNY) oalote dalipe A TAlo ano b Mt lln s (b) Calculate AG° for this reaction. -&.314 fodg ohnu iM (xMY) (c) How many ATP molecules can theoretically be generated by this reaction if the free energy of ATP synthesis under cellular conditions is 52 kJ/mol? ono l ban 9IA TTA TABLE 13-7b Standard Reduction Potentials of Some Biologically Important Half- Reactions Half-reaction E (V) Pyruvate+ 2H + 2e + lactate -0.185 Acetaldehyde + 2H* + 2e → ethanol FAD + 2H+ + 20 FADH2 -0.197 -0.219 Glutathione + 2H + 2e S+ 2H* + 2e+ H;S 2 reduced glutathione -0.23 -0.243 Lipoic acid + 2H* + 2e → dihydrolipoic acid -0.29 NAD* + H* + 2e NADH -0.320 NADP + H* + 2e + NADPH -0.324 Acetoacetate + 2H* + 2e > B-hydroxybutyrate a-Ketoglutarate + CO2 + 2H* + 2er + isocitrate 2H + 2e > H2 (at pH 7) Ferredoxin (Fe3*) + e> ferredoxin (Fe2") -0.346 4. -0.38 -0.414 -0.432 Source: Data mostly from R. A. Loach, in Handbook of Biochemistry and Molecular Biology, 3rd edn (G. D. Fasman, ed.), Physical and Chemical Data, Vol. 1, p. 122, CRC Press, 1976. SThis is the value for free FAD; FAD bound to a specific flavoprotein (e.g. succinate dehydrogenase) has a ditferent E" that depends on its protein environment.

Considering the reaction and the information in the Excel table below, what should be entered into cell D3 to calculate Kc? Fe3+(aq) + 2 SCN (aq) = Fe(SCN),"(aq) (bp).2( A 1 Equilibrium Concentration (M) B 2 Fe3+ SCN Fe(SCN)2+ Equilibrium Constant 3 9.70E-04 1.70E-04 2.60E-05 =C3/(A3*B3^2) O =C3/(A3^2*B3) O =A3*B3^2/C3 O =C3/(A3*B3)^2 O =C3/(A3*B3)

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Consider the following acidic reaction at constant temperature: HCIO2 (aq) H+ (aq) + CIO2 (aq), Ka = 0.011 Calculate [HCIO2leq if [HCIO2]0 = 0.072 M.

7. Given the following information, find K, for nitrous acid, HNO2. NO3 + 3H+ + 2e HNO₂ + H₂O E° = 0.940 V E' = 0.433 V

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Considering the reaction and the information in the Excel table below, what should be entered into cell D3 to calculate Kc?     A B C D 1 Equilibrium Concentration (M)   2 Fe3+ SCN- Fe(SCN)2+ Equilibrium Constant 3 9.70E-04 1.70E-04 2.60E-05             =C3/(A3*B3)^2     =C3/(A3^2*B3)     =A3*B3^2/C3     =C3/(A3*B3)     =C3/(A3*B3^2)

26. For which of these reactions will the sign of AG° be negative as written in aqueous solution at 298 K? What is the value of AG for these reactions at equilibrium? i. CI3CCOOH(aq) = H*(aq) + Cl3CCo0 (aq)

A concentration cell is constructed having Zn elelctrodes in two ZnSO4 solutions A and B. At 25°C, the osmotic pressure of the two solutions are 56.3 atm and 0.563 atm, respectively. Calculate the Ecell, assuming no ion pair formation. Pi= iMRT