What you picked is a very good buffer.
Do you know what a buffer is.
Acid buffers are WEAK acids and their salts.
Base buffers are WEAK bases and their salts.
You chose CH3COOH which is acetic acid and that is a weak acid. NaCH3CO2 is the salt of acetic acid so that makes a good buffer. What do you see in that list that is NOT a weak acid or weak base?
All of the following acid-base pairs are examples of buffers EXCEPT: (Question from "Cracking the MCAT, 2010-2011 edition" by The Princeton Review)
HCl/NaCl
CH3CO2H/NaCH3CO2
HF/NaF
H2CO3/NaHCO3
I chose ch3co2h/nach3co2
3 answers
ok so i think its hcl/nacl
right. The definition will always tell you.
1 answer