Carbon disulfide and oxygen react to form carbon dioxide and sulfur dioxide, lik
ID: 1026584 • Letter: C
Question
Carbon disulfide and oxygen react to form carbon dioxide and sulfur dioxide, like this CS2(g)+3O2(g) CO2(g)+2SO2(g) Suppose a mixture of CS2, O,, CO2 and SO2 has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left perturbation change in composition shift in equilibrium O to the right O to the left 0 (none) O to the right O to the left 0 (none) O to the right O to the left O (none) The pressure of CS2 wil ? Some SO2 is added. The pressure of 02 will ? The pressure of 02 w ? Some CS2 is removed The pressure of CO2 will The volume of the vessel is The pressure of Co2 will ? reduced. The pressure of SO2 will ?Explanation / Answer
Some SO2 is added
Pressure of CS2 will increase ; pressure of O2 will increase
Equilibrium shifts to the LEFT.
By increasing amount of SO2 the equilibrium has been disturbed. It could only be restored by the excess SO2 reacting to increase the amounts of CS2 and O2.
Some CS2 is removed
Pressure of O2 will increase ; pressure of CO2 will decrease
Equilibrium shifts to the LEFT.
Removal of CS2 disturbs the equilibrium which can be restored by reverse reaction to take place more.
Volume of the vessel decreased
Pressure of CO2 will increase ; pressure of SO2 will increase
Equilibrium shifts to the RIGHT.
Decrease in volume favors the reaction on which the number of gaseous moles is lesser. Here the right hand side has lesser gas moles, so it will be favored.