Consider the following system at equilibrium where Delta H degree = -198 kJ/mol,
ID: 516075 • Letter: C
Question
Consider the following system at equilibrium where Delta H degree = -198 kJ/mol, and K-c = 34.5, at 1150 K. 2 SO_2 (g) + O_2 (g) rlhar 2 SO_3 (g) When 0.33 moles of SO_3 (g) are removed from the equilibrium system at constant temperature: the value of K_c ____ increases decreases remains the same the value of Q_c __ is greater than K_c. is equal to K_c. is less than K_c. the reaction must: ____ run in the forward direction lo reestablish equilibrium run in the reverse direction lo reestablish equilibrium remain the same. It is already at equilibrium the concentration of O_2 will: _____ increase. decrease remain the same.Explanation / Answer
Kc is high meaning Products favored.
Kc is independent of concentrations it is an equlibrium value. Hence Kc remains constant Ans: Remain the same.
Qc concentration quotient and chenges with concentration. As concentration of reactants is reduced it will Increase and Greater than Kc.
The reaction must run in the reverse direction to establish equilibrium.
As reaction moves backwards hence concentration of O2 inceases.