Which of the following is untrue concerning a reversible reaction?
a. all reversible reactions will reach equilibrium.
b. the reaction always spends equal time in the forward and reverse direction.
c. there is equal processing for the concentration of reactants and products.
d. the reaction could spend more time in the reverse direction than in the forward direction.

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.