January 18, 2021, 02:27:29 AM
Forum Rules: Read This Before Posting


Topic: How do I quickly figure out which will form a buffer?  (Read 133 times)

0 Members and 1 Guest are viewing this topic.

Offline Tomf

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
How do I quickly figure out which will form a buffer?
« on: January 14, 2021, 05:41:21 AM »
for example I had a question where all the pairs have the same Molar ratio, and it asks me which pairs will form a buffer. How would I go about solving this. I don't need the solution, just a method for doing this please.

a.CH3COOH + CH3COONa
b.NH4Cl + NH3
c.HCl + NaCl
d.HCl + CH3COOH
e.NaOH + HCl
f.NaOH + CH3COO

Offline AWK

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 7853
  • Mole Snacks: +545/-92
  • Gender: Male
Re: How do I quickly figure out which will form a buffer?
« Reply #1 on: January 14, 2021, 05:49:56 AM »
Do you know the definition of a buffer solution?
AWK

Offline Tomf

  • Very New Member
  • *
  • Posts: 2
  • Mole Snacks: +0/-0
Re: How do I quickly figure out which will form a buffer?
« Reply #2 on: January 14, 2021, 05:57:42 AM »
Yes, it's a weak acid with it's conjugate base. I don't know how to figure that out quickly without calculating the pH

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 26237
  • Mole Snacks: +1706/-402
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: How do I quickly figure out which will form a buffer?
« Reply #3 on: January 14, 2021, 06:12:25 AM »
Yes, it's a weak acid with it's conjugate base.

Can you decide - for given mixtures - whether they contain such pairs?

(some of the questions, as asked, are impossible to answer without further info, but let's start with the obvious ones)
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

Sponsored Links