12/14/2016 RWW07 Bond Energies & Calorimetryhttp://www.webassign.net/web/Student/AssignmentResponses/view_key?dep=14314088 1/3Current Score : 65 / 100 Due : Friday, September 23 2016 11:59 PM EDT1. 0/10 points | Previous Answers0.174 mol of a solid was dissolved in 310 mL of water at 23.9 oC. After the solid had fully dissolved, thefinal temperature of the solution was 28.8 oC. What is the molar heat of solution of the substance?3.65 36.5 kJ/mol2. 10/10 points | Previous AnswersUse bond energies and the fact that the heats of formation of OF2 and OCl2 are 24.7 and 80.37 kJ/mol,respectively to determine the OF and OCl bond energies.DOF = 192 191 kJ/molDOCl = 206 205 kJ/mol3. 10/10 points | Previous AnswersUse a table of bond energies to determine the atomization energy of PCl3 and the average PCl bondenergy in PCl3.DPCl = 323.2 323.2 kJ/molUse the PCl bond energy and the atomization energy of POCl3 to determine the PO bond energy inPOCl3.DPO = 503 503.3 kJ/molRWW07 Bond Energies & Calorimetry (Homework)Paddy SheehanCH 201, section 002, Fall 2016Instructor: Robert WarrenWebAssignThe due date for this assignment is past. Your work can be viewed below, but no changes can be made.12/14/2016 RWW07 Bond Energies & Calorimetryhttp://www.webassign.net/web/Student/AssignmentResponses/view_key?dep=14314088 2/34. 20/20 points | Previous AnswersUse Bond energies to estimate the heats of formation of the following gases:CompoundHf (kJ/mol)NF3= 107 107H2NNH2= 86 86F2C=CH2*= 379.6 380CH3Cl*= 74.8 75*Hint: The standard state of carbon is solid graphite, but bond energies are for reactions inwhich all reactants and products are in the gas phase. You must use the heat of formation ofcarbon gas and bond energies to determine this energy.5. –/10 pointsWhat is the specific heat of a metal if addition of 95.0 g of the metal at 11.8 oC to 250.0 g of Cu (s =0.38 J/goC) at 197.8 oC produces a mixture that reaches thermal equilibrium at 152.5 oC?s = (No Response) 0.322 J/g·oC6. 25/25 points | Previous AnswersBalance the combustion reaction of chrysene (C18H12) at 298K.1 1 C18H12(s)+ 21 21 O2(g) 18 18 CO2(g) + 6 6 H2O(l)What is the value of ng for the combustion reaction?ng = 3 3 molWhat is Hcomb of chrysene if Ecomb = 8942.6 kJ/mol?Hcomb = 8950 8950.0 kJ/molWhat is the heat of formation of chrysene?Hf = 152.2 152.2 kJ/mol12/14/2016 RWW07 Bond Energies & Calorimetryhttp://www.webassign.net/web/Student/AssignmentResponses/view_key?dep=14314088 3/37. –/5 pointsA serving contains 4 g of fat, 12 g of carbohydrates, and 7 g of protein. How many dietary calories arein a serving?(No Response) 112 C8. –/10 pointsThe combustion of 2.650 mmol of X caused the temperature of a bomb calorimter to rise from 23.700 oCto 26.300 oC. Assume T = 25.000 oC, Hcomb = 2411 kJ/mol, and ng = 3 mol gas/mol X for thecombustion and determine the heat capacity of the calorimeter.C = (No Response) 2.465
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