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17 Nov 2019
Help... #1
Without doing a calculation, predict whether the entropy change will be positive or negative when each reaction occurs in the direction it is written, C_2H_2(g) +2 H_2(g) rightarrow C_2H_6(g) CH_4(g) + 2 O_2(g) rightarrow CO_2(g) + 2 H_2O(l) CaCO_3(s) rightarrow CaO(s) + CO_2(g) For the reaction PbO(s) + C(s) rightarrow Pb(s) + CO(g) Delta H^degree = +106.8 kJ and Delta S degree = +188.0 J/K. What is the value of G degree at 298 K? Would this reaction occur spontaneously? From the values given for Delta H degree and Delta H degree, predict if each reaction would be spontaneous at 298 K and if not, at what temperature the reaction would become spontaneous. 2 Pbs (s) + 3O_2 (g) rightarrow 2 PbO(s) + 2SO_2(g) Delta H degree = -844 kJ and Delta S degree = -165 J/K
Help... #1
Without doing a calculation, predict whether the entropy change will be positive or negative when each reaction occurs in the direction it is written, C_2H_2(g) +2 H_2(g) rightarrow C_2H_6(g) CH_4(g) + 2 O_2(g) rightarrow CO_2(g) + 2 H_2O(l) CaCO_3(s) rightarrow CaO(s) + CO_2(g) For the reaction PbO(s) + C(s) rightarrow Pb(s) + CO(g) Delta H^degree = +106.8 kJ and Delta S degree = +188.0 J/K. What is the value of G degree at 298 K? Would this reaction occur spontaneously? From the values given for Delta H degree and Delta H degree, predict if each reaction would be spontaneous at 298 K and if not, at what temperature the reaction would become spontaneous. 2 Pbs (s) + 3O_2 (g) rightarrow 2 PbO(s) + 2SO_2(g) Delta H degree = -844 kJ and Delta S degree = -165 J/K
Casey DurganLv2
9 Apr 2019