Select the correct answer. what effect would adding water (h2o) have on this reaction over time? (nh4)2co3(s) ⇌ 2nh3(g) +co2(g) +h2o(g) a. the concentration of products would increase, and the concentration of reactants would decrease. b. the concentrations of both products and reactants would increase. c. the concentration of products would decrease, and the concentration of reactants would increase. d. the concentrations of both products and reactants would decrease.