Question

"" 9900 CU U UUUUTE Exercises: 1. When butane (C4H10) undergoes combustion, 2853.6 kJ of energy is released for every mole of butane consumed. The combustion reaction is as follows: _C4H10(0) + _ 02(g) → __CO2(g) +_ H20(0) AH°rxn = ? a. Balance the equation b. Determine the value for AHºnxn (be careful to make sure the value corresponds to the correct number of moles of C4H10). 2. For the thermochemical equation Na(s) + 42 Cl2(g) → NaCl(s) AHºrx = -411.12 kJ/mol If 1.00 kg of sodium chloride is converted into solid sodium and chlorine gas through some industrial process, what will be the change in AHO? Will energy be added or removed in this reaction?
please help, explain steps I am very confused. thank you very much

Answer 1

a. 2 C4 H10 (l) + 13 O2(g) & Co. (g) + 10H₂011) B AHRU -2852 Hoxu = -2853.6 kJ/ md Cario (released soove) Foo rxnə 2 mol of butaneare unsunued Dhryn = 2x-2853.6 = -570112 KJ Na(s) + Illalg) Nall(s) Dhinxx = -411.12 - kJ/mol moles of Nall = 1000 g - tilla mal.. Nall - Na(s) +10, 1g)" SHixn = 411.12 kJ/mol. for 17.11 mol. Dhiran = 17.1184 1112 = 7034.9 KS. energy needs to be added. since shiron > Cendothumic)