Blog

Calculate So for the reaction: 4 Cr (s) + 3 O2 (g) 2 Cr2O3 (s)  So(Cr, s) = 23.77 J/K mol  So(O2, g) = 205.138 J/K mol So(Cr2O3, s) = 81.2 J/K mol  

Which relationship or statement best describes So for the following reaction? 2 NH3 (g) + 2 ClF3 (g) 6 HF (g) + N2 (g) + Cl2 (g)

A Voltaic cell is prepared using copper and silver. Its cell notation is shown below: Cu (s) Cu2+ (aq) Ag+ (aq) Ag (s)  Which of the following processes occurs at the cathode? 

The Voltaic cell made up of cobalt, copper, and their M2+ ions, has Ecello = 0.62 V. If Eo of the cathode half-cell is 0.34 V, what is Eo of the anode half-cell? Cu2+ (aq) + Co (s) Cu (s) + Co2+ (aq)

Which of the following is always true for an endothermic process? 

Examine the following half-reactions and select the weakest oxidizing agent among the species listed.  AuBr4- (aq) + 3e- Au (s) + 4 Br- (aq), Eo = 0.854 V Mn2+ (aq) + 2e- Mn (s), Eo = 1.185 V K+ (aq) + e- K (s), Eo =2.931 V F2O (aq) + 2H+ (aq) + 4e- 2 F- (aq) + H2O (l), Eo = 2.153 V 

Consider the figure that shows Go for a chemical process plotted against absolute temperature. From this plot, it is reasonable to conclude that  

Which relationship or statement best describes So for the following reaction? Pb (s) + Cl2 (g) PbCl2 (s)

A container was charged with hydrogen, nitrogen, and ammonia gases at 120oC and the system was allowed to reach equilibrium. What will happen if the volume of the container is increased at constant temperature? 3 H2 (g) + N2 (g) 2 NH3 (g)

Which of the following pairs is arranged with the particle of higher polarizability listed first?