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- Another step in the metabolism of glucose, which occurs after the formation of glucose6-phosphate, is the conversion of fructose6-phosphate to fructose1,6-bisphosphate(bis meanstwo): Fructose6-phosphate(aq) + H2PO4(aq) fructose l,6-bisphosphate(aq) + H2O() + H+(aq) (a) This reaction has a Gibbs free energy change of +16.7 kJ/mol of fructose6-phosphate. Is it endergonic or exergonic? (b) Write the equation for the formation of 1 mol ADP fromATR for which rG = 30.5 kJ/mol. (c) Couple these two reactions to get an exergonic process;write its overall chemical equation, and calculate theGibbs free energy change.Calculate A,G° at 25 °C for the formation of 1.00 mol of C3H;OH(g) from C3 H6 (g) and H20(g). Use this value to calculate K, for the equilibrium. C3H6 (g) + H2O(g) 2 C;H;OH(g) Use the following data: kJ A;G", mol C,H6 (g) 62.71 H2O(g) C;H;OH(g) -228.59 -170.65 Kp = The v value of A, G° and the v value of K, indicate that the reaction is product-favored.H3C. (k) Zn/CH;COOH > 1Q + 1R heat H3C
- When ethanol (CH;CH;OH) burns in oxygen, carbon dioxide and water are formed. (i) Write the equation which describes this reaction. (ii) Using the data below, calculate the value for AH° for the combustion of ethanol. AH; (CH;CH2OH(1)) = - 277.0 kJmol1 AH, (CO2(g)) = - 393.7 kJmol1 AH: (H2O()) = - 285.9 kJmol1Using the information shown below, calculate delta Hf for the following reaction: H2O(l) + C2H4(g) → C2H5OH (l) C2H4(g) + 3O2 → 3CO2(g) + 2H2O (l) delta Hf= -1411.1 kJ C2H5OH (l) + 3O2(g) → 2CO2(g) + 3H2O(l) delta Hf= -1367.5 kJAmmonium sulfate, (NH,),SO4, is used as a fire retardant and wood preservative; it is prepared industrially by the highly exothermic reaction of gaseous ammonia with sulfuric acid: 2 NH, (g) + H,SO,(aq)→ (NH, ),SO, (s) The value of AH°, ammonium sulfate (in kilojoules per mole). is -179.4 kJ/g H, SO. Use the data in Table T1 to calculate the standard enthalpy of formation of rxn
- C6H12O6(aq) + 6O2(g) 6CO2(g) + 6H2O(l)ΔH = –2802.7 kJ mol –1a) Write an expression for the equilibrium constant for this reaction.b) At equilibrium, the concentration of the reactants and products are determined as [CO2] = 0.30 M, [O2] = 0.040 M and [C6H12O6] = 0.065 M. Determine the value of the equilibrium constant (Kc) and predict the whether the products or reactants will be favoured at equilibrium.c) Given that the concentrations of the reactants and products at a particular time are [CO2] = 0.65 M, [O2] = 0.020 M and [C6H12O6] = 0.055 M, determine the reaction quotient (Qc). Compare the Kc and Qc values and predict the favoured direction of the reaction.d) Explain the effect on equilibrium of:i) Increasing temperatureii) Increasing pressureiii) Decreasing the concentration of oxygeniv) Increasing the concentration of carbon dioxidev) Adding a catalystFor the oxidation of iron to form iron(III) oxide: 4Fe(s) + 3O2(g) ⟷⟷ 2Fe2O3(s) ΔSo = –549.73 J∙K–1 at 298 K. The enthalpy of formation of Fe2O3(s) is –824.2 kJ∙mol–1. What is the standard change in Gibbs free energy for this reaction at 298 K? A)-660 kJ B)-1,485 kJ C)-988 kJ D)-1,812 kJCombustion of glucose (CH,0 is the main source of energy for animal cells: CH,0,) + 60,(g) -- 6CO,(g) + 6H,o) AG,(37 C) =- 2872. kI One of the most important uses to which this energy is put is the assembly of proteins out of amino acid building blocks. The Gibbs free energy of formation of one peptide bond, joining one amino acid to another, is 21 k/mol. Suppose some cells are assembling a certain protein made of 84 amino acids. (Note that the number of peptide bonds in the protein will be one less than the number of amino acids.) Calculate the minimum mass of glucose that must be burned to assemble 400. umol of this protein. Round your answer to 2 significant digits.
- b) Determine the standard enthalpy change and std. Gibbs free energy change of reaction at 400 k for the reaction Co(g) +2H2(g) → CH;OH (g) At 298.15 K, AH?.co )= -26.41 kcal/mol, AH?.CH,OH()= -48.08 kcal/mol, AG.co )= -32.8079 kcal/mol, AG.CH,OH(@)= -38.69 kcal/mol, The standard heat capacity of various components is given by. CS = a + bT + cT2 + dT³, where C is in cal/mol-K and T is in K |Component b x10 e x105 d x10° a -0.291 CH3OH CO 4.55 2.186 -1.92 6.726 0.04 0.1283 -0.5307 H2 6.952 -0.0457 0.09563 -0.2079ST5A.4 - Calculate the standard reaction Gibbs free energy [in kJ/mol] for the reaction 1A+ 1B --> 4C + 2D given the Gibbs free energies of formation below. A: A¡G =21.1 kJ/mol B: A¡G =0kJ/mol || C: A;G =-38.5 kJ/mol D: A¡G = 56.9 kJ/mol Type your answer...What is the standard Gibbs free energy for this reaction? Assume the commonly used standard reference temperature of 298 K. Express your answer as an integer and include the appropriate units. ► View Available Hint(s) Submit AGixn = 6.24. 10¹¹ Part B AGrxn= xa Submit Part C μÅ Xb b Teq = Previous Answers X Incorrect; Try Again; 5 attempts remaining Enter your answer with a different unit type. Review a list of acceptable units. What is the Gibbs free energy for this reaction at 5975 K ? Assume that AH and AS do not change with temperature. Express your answer to two decimal places and include the appropriate units. ► View Available Hint(s) Value μА Value . μA X.10n J K X Units At what temperature Teq do the forward and reverse corrosion reactions occur in equilibrium? Express your answer as an integer and include the appropriate units. ► View Available Hint(s) Units ? ?