Choose the one alternative that best completes the statement or answers the ques
ID: 507770 • Letter: C
Question
Choose the one alternative that best completes the statement or answers the question. Consider the following reaction at equilibrium. What will happen if the pressure increased? 4 FeS_2(s) + 11 O_2(g) = 2 Fe_2O_3(s) + 8 SO_2(g) The equilibrium constant will increase. The equilibrium will change in the direction of the reactants, The equilibrium will change in the direction of the products No change in equilibrium is observed. The equilibrium constant will decrease. Consider the following reaction: COCI_2(g) - CO(g) + Cl_2(g) A reaction mixture initially contains 1.6 M COCl_2. Determine the equilibrium concentration of CO if K_c for the reaction at this temperature is 8.33 times 10^-4 Calculate this based on the assumption that the answer is negligible compared to 1.6. 15 times 10^-3 M 13 times 10^-3 M 4.2 times 10^-4 M 2.1 times 10^-2 m 3.7 times 010^-2 M The equilibrium constant is given for two of the reactions below. Determine the value of the missing equilibrium constant. 2A(g) + B(g) = A_2B(g) kc = ? A_2B(g) + B(g) = A_2_2(g) kc = 16.4 2 A(g) + 2 B(g) = A_2B_2(g) kc = 28.2 462 0.00216 1.72 11.8 0.582 In which of the following reactions will K_c = K_p? 2 SO_2(g) + O_2(g) = 2 SO_3(g) 4 NH_3(g) + 3 O_2(g) = 2 N_2(g) + 6 H_2O(g) SO_3(g0 + NO(g) = SO_2(g) + NO_2(g) 2 N_2(g) + O_2(g) = 2 N_2O(g) None of the above reactions have K_c = K_p.Explanation / Answer
Question 1.
If we increase the pressure:
moles of gas in reactants = 11 moles of oxygen
moles of gas in products = 8 moles of SO2
then, the pressure affects much stronger the larger amount, i.e. Oxygen
So this favours more production of the moles of SO2
the shift goes from left to rigth, i.e. choose C, the shift is seen from reactants to products