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17 Nov 2019
For the process H_2 O(s) H_2 O(t) at 1 bar and 0 degree C, Delta_r H degree_273 = 6025 Jmol^-1. What is degree_r S degree_273? For the combustion of glucose at 298 K, Delta_r S degree = 182.4 JK^-1 mol^-1 and Delta_r H degree =-280 kJ mol^-1, Calculate Delta S_tot. C_6 H_12 O_6 (s) + 6 O_2 (g) 6 CO_2 (g) + 6 H_2 O(l) At one bar and 298 K, Delta_r S degree for H_2 (g) + 1/2 O_2 (g) H_2 O(l) is -163.34 JK^-1 mol^-1 and Delta_r H degree = -285.83 kJ mol^-1. Is this reaction spontaneous? Does the sign of Delta_r S degree agree with your expectations? For C(graphite) = C(diamond) at 298 K and one bar, degree_r H degree = + 1.895 kJ mol^-1 and Delta_r S degree = -3.363 JK^-1 mol^-1. Is this reaction spontaneous? Is the reverse reaction spontaneous? The enthalpy of vaporization of benzene at 1 atm and its normal boiling point 353 is 30.8 kJ mol^-1. What is the difference in entropy between gaseous and liquid benzene under these conditions?
For the process H_2 O(s) H_2 O(t) at 1 bar and 0 degree C, Delta_r H degree_273 = 6025 Jmol^-1. What is degree_r S degree_273? For the combustion of glucose at 298 K, Delta_r S degree = 182.4 JK^-1 mol^-1 and Delta_r H degree =-280 kJ mol^-1, Calculate Delta S_tot. C_6 H_12 O_6 (s) + 6 O_2 (g) 6 CO_2 (g) + 6 H_2 O(l) At one bar and 298 K, Delta_r S degree for H_2 (g) + 1/2 O_2 (g) H_2 O(l) is -163.34 JK^-1 mol^-1 and Delta_r H degree = -285.83 kJ mol^-1. Is this reaction spontaneous? Does the sign of Delta_r S degree agree with your expectations? For C(graphite) = C(diamond) at 298 K and one bar, degree_r H degree = + 1.895 kJ mol^-1 and Delta_r S degree = -3.363 JK^-1 mol^-1. Is this reaction spontaneous? Is the reverse reaction spontaneous? The enthalpy of vaporization of benzene at 1 atm and its normal boiling point 353 is 30.8 kJ mol^-1. What is the difference in entropy between gaseous and liquid benzene under these conditions?
Lelia LubowitzLv2
9 Apr 2019