Changes Affecting the Equilibrium Constant

Question 1

changes in concentration
If all other conditions stay the same, the equilibrium constant Kc is………

Answer 1

by any changes in concentration of the reactants or products

Question 2

A change in pressure only changes the position of the equilibrium (see Le Chatelier’s principle)
If all other conditions stay the same, the equilibrium constant Kc is ……… by any changes in pressure of the reactants and products

Answer 2

not affected

Question 3

Changes in temperature

Changes in temperature ………..the value of the equilibrium constant, Kc

Answer 3

affect

Question 4

Increasing the temperature ………….the value of the equilibrium constant

endothermic

Answer 4

decreases

Question 5

decreasing the temperature ………….the value of the equilibrium constant

exothermic

Answer 5

increases

Question 6

If all other conditions stay the same, the equilibrium constant Kc is ………… by the presence of a catalyst

A catalyst speeds up both the forward and reverse reactions at the same rate so the ratio of [ products ] to [ reactants ] remains unchanged

Answer 6

not affected

Question 7

Only a change in temperature will affect the value of Kc and any other changes in conditions would result in the

Answer 7

position of the equilibrium moving in such way to oppose this change.