pH, Acids, and Buffers Flashcards Preview

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Flashcards in pH, Acids, and Buffers Deck (14):
1

in an aqueous solution a proton combines with a water molecule to form a

hydronium ion

2

Kw at 25C and 1atm is

1.0*10^-14

3

acids are

proton donors

4

bases are

proton acceptors

5

strong acids will

completely dissociate in water

6

lower pKa means

stronger acid

7

acid dissociation constant

Ka

8

commonly composed to a weak acid and its conjugate base, also help maintain a relatively constant hydrogen ion concentration

Buffer

9

equilibrium shifts in the direction that relieves the stress

le chatelier's principle

10

establishes the relationship between pH and pKa for selecting a buffer

Henderson-hasselbalch equation

11

buffers are most effective when they are composed of

equal parts weak acid and conjugate base

12

best buffering occurs

1 pH unit above and below the pKa

13

buffers adapted to solve specific physiological problems within the body

physiological buffers

14

one of the most important buffers in the blood

bicarbonate buffer