D degenha7 New Member 10+ Year Member Jun 4, 2013 #1 Advertisement - Members don't see this ad When determining pH of weak acid/base do I always use the formula K=[pdt]/[rct]? When do I use the Henderson-Hasselbach equation? I know it is for buffers, but I keep confusing the two...
Advertisement - Members don't see this ad When determining pH of weak acid/base do I always use the formula K=[pdt]/[rct]? When do I use the Henderson-Hasselbach equation? I know it is for buffers, but I keep confusing the two...
B babowc Per angusta ad augusta 10+ Year Member Jun 4, 2013 #2 I use [H+] = sqrt ([Ka][HA]), derived from your equation. Then pH = -log[H+] Henderson-Hasselbach should be used when you've a weak acid+conjugate base or weak base+conjugate acid. Upvote 0 Downvote
I use [H+] = sqrt ([Ka][HA]), derived from your equation. Then pH = -log[H+] Henderson-Hasselbach should be used when you've a weak acid+conjugate base or weak base+conjugate acid.
