Predict the sings of delta H_rxn and delta s_rxn for the following process: 2 CH_3 OH(g)...
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Which of the following is necessary for a process to be spontaneous? A) Delta H_sys < 0 B) Delta S_sys > 0 C) Delta S < 0 D) Delta S_univ > 0 E) Delta G_sys = 0 Which reaction has the largest Delta S degree? A) 2 N_2H_4(g) rightarrow 2 NH_3(g) + H_2(g) B) O_2(g) + 2 H_2(g) rightarrow 2 H_2O(l) C) O_2(g) + 2 H_2(g) rightarrow 2H_2O(g) D) N_2(g) + 3H_2(g) rightarrow 2NH_3(g) E)...
Use the standard reaction enthalpies given below to determine Delta H_rxn degree for the following reaction: 2 S(s) + 3 O_2(g) rightarrow 2SO_3(g) Delta H_rxn degree Given: SO_2(g) rightarrow S(s) + O_2(g) Delta H_rxn degree = +296.8 kJ 2SO_2(g) + O_2(g) rightarrow 2 SO_3(g) Delta H_rxn degree = -197.8 kJ Name those compounds? Li_2SO_3 Al_2S_3 P_2O_3 COBr_2-6H_2O
Write products for the following acid-base reaction () CH_3 OH + H_2 SO_4 rightarrowoverleftarrow CH_3 OH + NA^+ NH^-_2 rightarrowoverleftarrow CH_3 NH^+_3 CL^- + Na^+ OH^- rightarrowoverleftarrow + rightarrowoverleftarrow
At 25 degree C, the following heats of reaction are known: 2CIF (g) + O_2 (g) rightarrow Cl_2O (g)+ F_2O (g) Delta H_rxn^degree = 167.4 kJ/mol 2ClF_3 (g) +2O_2 (g) rightarrow Cl_2O (g) + 3F_2O (g) Delta H_rxn^degree = 341.4 kJ/mol 2F_2 (g) + O_2 (g) rightarrow 2F_2O (g) Delta H_rxn^degree = -43.4 kJ/mol At the same temperature, use Hess' law to calculate Delta H_rxn^degree for the following reaction: ClF (g) + F_2 (g) rightarrow ClF_3 (g)
For the following equilibrium: N_2(g) + H_2(g) rightarrow NH_3(g) delta H= -386 kJ/mole Predict the direction the equilibrium will shift if: N_2 is added? H_2 is removed? NH_3 is added? NH_3 is removed? the volume of the container is decreased? the pressure is increased by adding Argon gas? the reaction is cooled? equal number of moles of H_2 and NH_3 are added? a catalyst is added The equilibrium constant for the following reaction is 5.0 at 400 degree C. CO_(g)...
Ammonia will burn in the presence of a platinum catalyst to produce nitric oxide, NO. 4NH_3(g) + 5O_2(g) rightarrow 4NO(g) + 6 H_2 O(g) What is the heat of reaction at constant pressure? Use the following thermochemical equations: N_2(g) + O_2 (g) rightarrow 2NO(g): Delta H = 180.6 kJ N_2(g) + 3H_2 (g) rightarrow 2 NH_3 (g) Delta H = -91.8 kJ 2H_2 (g) + O_2 (g) rightarrow 2H_2O(g): Delta H = -483.7 kJ
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Calculate delta H degree and Delta G degree following reactions at 25 degree C, using thermodynamic data from Appendix C; interpret the signs of Delta H degree and Delta G degree. (18.50) 2PbO(s) + N_2(g) rightarrow 2Pb(s) + 2NO(g) CS_2(I) + 2H_2O(l) rightarrow CO_2(g) + 2H_2S(g)
Use Hess's Law to determine Delta H for the reaction 2 Al(s) + 3 Cl_2(g) rightarrow 2 AlCl_3(s) given: 2 Al(s) + 6 HCl(aq) rightarrow 2 AlCl_3(aq) + 3 H_2(g) Delta H = -1049 kJ HCl(g) rightarrow HCl(aq) Delta H = -74.8 kJ H_2(g) + Cl_2(g) rightarrow 2 HCl(g) Delta H = -185 kJ AlCl_3(s) rightarrow AlCl_3(aq) Delta H = -323 kJ
Given reactions 1 and 2 below, calculate delta H degree_Rxn and delta U degree_Rxn for reaction 3. Rxn 1 H_2(g) + I_2(s) rightarrow 2 HI(g) delta H degree_Rxn = +52.96 kJ/mol Rxn 2 2H_2(g) + O_2(g) rightarrow 2 H_2 O(g) delta H degree_Rxn = -483.64 kJ/mol Rxn 3 4 HI(g) + O_2(g) rightarrow 2 I_2(s) + 2 H_2O(g) delta H degree_Rxn = ? delta U degree_Rxn = ?
Consider the following reaction: 2Ca(s) + O_2(g) rightarrow 2CaO(s) Delta H_rxn = -1269.8 kJ; Delta S_rxn degree = -364.6 J/K Assume that all reactants and products are in their standard states. Part A Calculate the free energy change for the reaction at 28 degree C. Part B Is the reaction spontaneous? spontaneous nonspontaneous