Compare and contrast the preparation of a buffer by the practical and the theoretical method. Why might one method be better than the other? a) Theoretical method involves calculating exact amounts of acid and base needed, while practical method involves mixing solutions until desired pH is reached. Theoretical method is more precise but practical method is faster. b) Theoretical method involves mixing solutions until desired pH is reached, while practical method involves calculating exact amounts of acid and base needed. Theoretical method is faster but practical method is more precise. c) Theoretical method involves preparing a stock solution and diluting it to desired pH, while practical method involves preparing solutions of known pH and mixing them. Theoretical method is faster but practical method is more precise. d) Theoretical method involves preparing solutions of known pH and mixing them, while practical method involves preparing a stock solution and diluting it to desired pH. Theoretical method is more precise but practical method is faster.