For the reaction 2 SO 2 ( g ) + O 2 ( g ) − ⇀ ↽ − 2 SO 3 ( g ) the equilibrium constant is K c = 15 M − 1 at 850 K . Three sets of concentrations are given for the three gases in the reaction. For each set, predict the direction in which the net reaction will proceed toward equilibrium.

The given question is incomplete. The complete question is :

For the reaction the equilibrium constant is K c = 15 M − 1 at 850 K . Three sets of concentrations are given for the three gases in the reaction. For each set, predict the direction in which the net reaction will proceed toward equilibrium.

a) , , and ,

b) , , and ,

c) , , and ,

a) the reaction will proceed in in backward direction

b) The reaction is in equilibrium

c) The reaction wil proceed in forward direction

Explanation:

Reaction quotient (Q) : It is defined as the measurement of the relative amounts of products and reactants present during a reaction at a particular time.

Conditions are:

When K < Q; the reaction is favored to the left or in backward direction or reactants are formed more.

When K > Q; the reaction is favored to the right or in forward direction or products are formed more.

When K = Q; the reaction is in equilibrium.

a) , the reaction will proceed in in backward direction

b) , is in equilibrium

c) , the reaction wil proceed in forward direction

c, liquids evaporate, creating a gas