Answer to Question #106832 in Physical Chemistry for Rickie McClain

Question

The reaction of carbon monoxide and diiodine pentoxide as represented by the equation: I2(g) + 5CO2(g) 5CO(g) +
I2O5(g) is exothermic. The yield could be increased by:

Answer 1

$I_2(g) + 5CO_2(g)\to 5CO(g) + I_2O_5(g)$ , $\Delta H=-ve$

here $\Delta$n=0 so there will be no effect of pressure on the the equilibrium

If we decrease the temperature then by Lechatlier's principle the equilibrium will shift in that direction where the temperature will increase , as the $\Delta$H is negative so the equilibrium will shift in forward direction on decreasing the temperature to compensate the disturbance produced