Set of 30 flashcards that cover the most commonly assigned pKa values for memorization.Front of each card shows the acid and the beginning of the half-reaction......the back of each card shows the conjugate base, the literature pKa value and a color coding system to aid in recall. Strongest acids are red, varying to orange, yellow, green, blue all the way to the weakest acids which are coded violet. A brief explanation of conjugate base stability is given, as that is what drives acidity. pKa