What relative conditions (reactant concentrations, pressure, and temperature) would favor a high equilibrium concentration of the underlined substance in each of the following equilibrium systems?
options: increase, decrease, no effect
a. 2CO(g) + O2(g) <--> 2CO2 (g) + 167 kJ (2CO2 is highlighted)
b. Cu2+(aq) + 4NH3(aq) <--> Cu(NH3)42+(aq) + 42 kJ (Cu(NH3)42 is highlighted)
c. 2HI(g) + 12.6 kJ <--> H2(g) + I2(g) (l2 is highlighted)
d. 4HCl(g) + O2(g) <--> 2H2O(g) + 2Cl2(g) + 113 kJ (2CI2 is highlighted)
e. PCl5(g) + 88 kJ <--> PCl3(g) + Cl2(g) (CI2 is highlighted)