c) For phosphate buffer, derive a buffer capacity formula that describes when a strong base is added.
d) Plot the buffer capacity against pH (between 1 and 13) for a 100 mM phosphate buffer.
e) Based on your figure, discuss at which pH the phosphate buffer above is suitable to use as
buffer.

Buffer capacity a) What is the unit of B? b) Show step by step how we find the solution for B. You can start from below Ctot Ka Ka+10-PH Cb= B = dC dpH -10-PH + =In10 (Stot[H] (K+[H*]) 10-PH + [H+] + KW),