Question

1) Predict the effect on the equilibrium system if the reaction temperature is decreased.

2CO2(g) + heat = 2CO(g) +O2(g)

a) Will shift to the side that the light side of the force is on

b) it will shift to the left favoring the reactants

c) there will be no effect

4) Predict the color of the reation mixture at -15 degrees Celsius

2NO2= Brown and N2O4= Colorless

2NO2(g) <------------> N2O4(g)

a) Purple

b)Aqua

c)colorless

Answer 1

1) Predict the effect on the equilibrium system if the reaction temperature is decreased.

2CO2(g) + heat = 2CO(g) +O2(g)

since it requires heat to react, adding more heat, will make the shift toward products,

a) Will shift to the side that the light side of the force is on

4) Predict the color of the reation mixture at -15 degrees Celsius

N2O4 = +9.2

NO2 = +33.2

Hrxn = 9.2 - (2*+33.2) = -57.2 kJ/mol

This is exothermic, therefore; at very cool temperatures, expect the shift go towards reactants

that is

NO2, which is borwn,