(Solved): Question 1 Use the standard molar entropies given in each part to calculate S for ...

Question 1 Use the standard molar entropies given in each part to calculate $$?S^{?}$$ for each of the following reactions. a) $${\mathrm{N}}_2(g)+{\mathrm{O}}_2(g)?2\mathrm{NO}(g)$$ $$S_{\mathrm{NO}}^o=210.7\frac{J}{\mathrm{mol}?\mathrm{K}}{S}_{N_2}^o=191.5\frac{\mathrm{J}}{\mathrm{mol}?K}{S}_{O_2}^o=205.0\frac{J}{\mathrm{mol}?\mathrm{K}}$$ $$J/K$$ Enter an integer or dacimal number [morew]. b) $$\begin{array}{l}NO(g)+\frac{1}{2}{\mathrm{O}}_2(g)?{\mathrm{NO}}_2(g)\\ S_{{\mathrm{NO}}_2}^o=240.0\frac{\mathrm{J}}{\mathrm{mol}?\mathrm{K}}{S}_{\mathrm{NO}}^o=210.7\frac{\mathrm{J}}{\mathrm{mol}?\mathrm{K}}{S}_{{\mathrm{O}}_2}^o=205.0\frac{\mathrm{J}}{\mathrm{mol}?\mathrm{K}}\end{array}$$ c) $${\mathrm{SO}}_3(g)+{\mathrm{H}}_2\mathrm{O}(\mathrm{l})?{\mathrm{H}}_2{\mathrm{SO}}_4(\mathrm{aq})$$ $$S_{{\mathrm{SO}}_3}^{?}=256.8\frac{\mathrm{J}}{\mathrm{mol}?\mathrm{K}}{S}_{{\mathrm{H}}_2\mathrm{O}}^o=69.9\frac{\mathrm{J}}{\mathrm{mol}?\mathrm{K}}{S}_{{\mathrm{H}}_2{\mathrm{SO}}_4}^o=20.1\frac{\mathrm{J}}{\mathrm{mol}?\mathrm{K}}$$ Determine the value of $$?G^{?}$$ for the reaction of acetylene gas with hydrogen gas given the following thermodynamic data at $$25^{?}\mathrm{C}$$. $${\mathrm{C}}_2{\mathrm{H}}_2(g)+2{\mathrm{H}}_2(g)?{\mathrm{C}}_2{\mathrm{H}}_6(g)$$ Which of the following reactions is spontaneous only at low temperatures; only at high temperatures; at temperatures? Use the data table below to help calculate $$?H_{rxn}^o,?S_{rxn}^o$$ or $$?G_{rxn}^o$$ as indicated to helf you determine the answer. a) $${\mathrm{NH}}_4{\mathrm{NO}}_3(s)?2{\mathrm{H}}_2\mathrm{O}(g)+{\mathrm{N}}_2\mathrm{O}(g)$$ $$?H_{rxn}^o=$$ The reaction is spontaneous at high temperatures all temperatures low temperatures b) $$\mathrm{S}(g)+{\mathrm{O}}_2(g)?{\mathrm{SO}}_2(g)$$ $$\begin{array}{ll}?G_{rxn}^o=& \mathrm{kJ}\\ ?H_{rxn}^o=& \mathrm{kJ}\\ ?S_{rxn}^o=& \mathrm{J}/\mathrm{K}\end{array}$$ The reaction is spontaneous at