Buffers

What is a buffer solution?

• A solution that is resistant to changes in pH

• A solution that accepts changes in pH

• Any solution containing an acid and a base

• None of these

What is a buffer compromised of?

(CHECK ALL THAT APPLY)

• A weak acid and its conjugate base

• A weak base and its conjugate acid

• A strong base and its conjugate base

• A strong acid and its conjugate acid

What does the word ameliorate mean?

• Make something good better

• Make (something bad or unsatisfactory) better

• To make something

• To make something bad worse

How is the negative log 10 of the acid ionization constant Ka abbreviated?

• P

• pK

• pKb

• pKa

How is the base constant abbreviated?

• P

• pKb

• pKa

• pK

WATCH YOUR SIG FIGS!!!!

If your number has TWO significant figures and Ka = 3.3x10-4, then pKa = ?

How can the pH of a buffer be calculated?

• Henderson-Hasselbalch equation

• Hasselbalch- Henderson equation

• Weak acid equation

• None of these

A mixture of​ (a)   and ​ (b)   makes an effective buffer

• acetic acid
• sodium acetate
• acid
• base
• metal
• non-metal

What can the pH value be of buffers?

• 1-3

• 4-6

• 8+

• Any

What TWO buffer solutions will you prepare for this experiment?