Question

Q1)Reactions tend to form the most products when

a) the disorder increases and the energy content increases.

b) the disorder increases and the energy content decreases.

c) the disorder decreases and the energy content increases.

d) the disorder decreases and the energy content decreases.

e) None of the above are correct.

Q2)Assuming all following gases can be considered as ideal, which chemical system shifts to the right when pressure is increased?

a) CO2(g) + H2(g) <----> CO(g) + H2O(g)

b) N2(g) + 3H2(g) <----> 2NH3(g)

c) H2(g) + I2(g) <----> 2HI(g)

d) PCl5(g) <----> PCl3(g) + Cl2(g)

Q3)For the equilibrium,

2NO(g) + 2CO(g) <----> N2(g) + 2CO2(g) + heat,

what conditions favour maximum conversion of the reactants to products?

a) high temperature and high pressure

b) low temperature and high pressure

c) high temperature and low pressure

d) low temperature and low pressure

Q4)What is the result of an increase in the temperature of a system at equilibrium?

a) The endothermic reaction is favoured, and the reaction rate decreases.

b) The endothermic reaction is favoured, and the reaction rate increases.

c). The exothermic reaction is favoured, and the reaction rate decreases.

d) The exothermic reaction is favoured, and the reaction rate increases.