Choose the best answer Choose the best answer. At equilibrium _. all chemical re
ID: 496171 • Letter: C
Question
Choose the best answer Choose the best answer. At equilibrium _. all chemical reactions have ceased the rates of the forward and reverse reactions are equal the rate constants of the forward and reverse reactions are equal the value of the equilibrium constant is 1 the limiting reagent has been consumed the equilibrium constant K_c for the gas phase reaction is K_c = 4.34 times 10^-3, at 300 degree C. At equilibrium, which statement is true about number of reactants and products? products predominate roughly equal amounts of products and reactants are present reactants predominate only products are present only reactants are present Consider the following equilibrium the equilibrium cannot be established when _ is/are placed in a 1 0 - L container. 0.25 mole SO_2 and 0.25 mole O_2 (g) 0.75 mole SO_2 (g) 0.25 mole of SO_2 (g) and 0.25 mole of SO_3 (g) 0.50 mole O_2 (g) and 0.50 mole SO_3 (g) 1.0 mole SO_3 (g)Explanation / Answer
Hi
1. At equilibrium the rate of forward reaction becomes equal to rate of backward reaction.
2. The equilibruim constant is less than, so the reactant predominates in the reaction.
3. 0.25 mole of SO2 (g) and 0.25 mole of SO3 (g). The concentration differnce of product and reactant which is the driving force for equlibrium is zero in this case,so equilibrium cannot be established.
Thank you