chemical equilibrium

[dinosaur93]

1) At room temperature 0.80 moles of SO2 and 0.40 moles of O2 were introduced into a sealed 10 L vessel and allowed to come to equilibrium.

a) Write the equilibrium constant expression and calculate the value for the
equilibrium constant at time A.
Solution

(b) Explain why a new equilibrium position was established at time B.

(c) Could someone help explain to me why the concentration of SO3 increased and SO2 decreased before Time A was reached? tnx..

[dinosaur93]

2.) The graph shows the variation in concentration of reactant and products as a function of time for the following system.

(i) Identify and explain each of the changes in conditions that have shaped the curves during the time the system was observed.

[3 marks]

(What should my answer contain in order to obtain full mark for such a Q like this?)



Would the one below be enough to be rewarded full marks?

• At 4 minutes, The equilibrium experienced an raise in temperature, favouring the net forward reaction. 
• At 10 minutes, There was a sharp in [CO] suggesting that it was removed from the equilibrium, in which case favoured the net forward reaction.
• At 14 minutes, all of the reactants and product's concentration abruptly decrease, therefore indictaing an increase in volume.