Consider the following solutions and their respective pH values. Which substance would be effective(K>1) for the deprotonation of NH4+ ? 0.1 M A, pH = 6.85 0.1 M B, pH = 7.22 0.1 M C, pH = 8.34 0.1 M D, pH = 11.88 1) A 2) B 3) C 4) D 5) none are effective If the reaction to be effective doesn't Strong acid have to react with strong base? since NH4+ is strong acid, I thought it should react with the strongest base among the four substances, so i chose D, which has the highest pH value. Is it right, or am I doing something wrong here?