Question

Maximum buffer capacity

Answer 1

why is the answer b?

Answer 2

okay i calculated the pKa for all using pKb=log(-Kb)
a. pKb= 4.74
b. pKb= 7.62
c. pKb= 11.9
d pKb= 11.24

Answer 3

what's the relationship between pKA and pKB?

Answer 4

pKa is for acid and pKb is for base?

Answer 5

i'm having a hunch, isit because b is closer to b, at a range of +/- 1 ?

Answer 6

True, but what do they have in common?

Answer 7

when they give you KB, but ask for pH, finding pKB isn't the same as finding pH

Answer 8

okay, so what am i supposed to do?

Answer 9

henderson equation?

Answer 10

remember that pKA + pKB = 14?

Answer 11

ohh.. okay so means.. pKa=14-7.62=6.38? that would be the closest then, thanks! :D

Answer 12

YW