Determining the pH of an acid and base in various situations by working with concentrations. A multi-step question.

This solution walks you through the answer to a type of "buffer" problem commonly found on chemistry, biology, and biochemistry exams and laboratory assignments.  The solution is laid out in a step by step fashion and includes both a long answer and a time-saving short-cut that you can use when the buffer is to made at a a certain pH.  After reading and trying this problem, you should be better able to understand buffer calculations, find pKa values, understand and use the Henderson-Hasselbach equation, and calculate the pH of buffers under different situations.  Take the steps shown and apply them to a problem from your textbook or assignment.