If a buffer with a pH of 10.00 is needed, which of the following can we use?
ethanoic acid with Ka= 1.8* 10^-5 or
ammonia with Kb = 1.8* 10^-5.
I know that pH and pOH must equal 14. so if 10 is to be added then we r left out with 4 .
The negative log of 1.8* 10^-5 is 4.7(still a closer value to 4). we need either a weak acid ( ethanoic acid) or a weak base (as ammonia) . So I am not sure how to choose one out of the above 2...