Acids, Bases And Buffers

Front 1

Ka data provided for ______ acids only

Back 1

Weak

Front 2

Ph meter only gives values to ___ D.P

Back 2

2

Front 3

The higher the Pka the ____________ the acid
The higher the Ka the __________ the acid

Back 3

weaker
stronger

Front 4

Ka Expression:
[x]^? for di acids
[x]^? for tri acids

Back 4

[x]^2
[x]^3

Front 5

A weak acid is denoted by the letters ___
A conjugate base is denoted by the letter ___
An acid is denoted by the letters

Back 5

HA
A-
H+

Front 6

HA <-> ____ + _____

Back 6

HA(aq) <-> A-(aq) + H+(aq)

Front 7

The weak acid removes most of any _______.
The conjugate base removes most of any added _______.
Ph changes are ___________.

Back 7

The weak acid removes most of any base
The conjugate base removes most of any added acid.
Ph changes are minimised.

Front 8

Added acid and added alkali shift the buffer in _________ directions

Back 8

Opposite

Front 9

Adding Alkali
-Concentration of OH- _____________
-Oh- react with the H+ ions from the conjugate _____, HA, forming H2O (H+ OH- -> H2O)
-Equilibrium position shifts to the _______

Back 9

Adding Alkali
-Concentration of OH- increases
-Oh- react with the H+ ions from the conjugate acid, -HA, forming H2O (H+ OH- -> H2O)
-Equilibrium position shifts to the right

Front 10

Adding Acid (H+)
-Concentration of H+ ___________
-H+ ions react with the conjugate ______, A-, forming HA, (H+ + A- -> HA)
-Equilibrium position shifts to the _____

Back 10

Adding Acid (H+)
-Concentration of H+ increases
-H+ ions react with the conjugate base, A-, forming HA(H+ + A- -> HA)
-Equilibrium position shifts to the left

Front 11

Kw is the...

Back 11

Ionic product of water

Front 12

What is the conjugate base of CH3COOH
What is the conjugate acid of H2PO4-

Back 12

CH3COO-
H3PO4

Front 13

How do you find the most appropriate weak acid given a Ph range

Back 13

Look for a similar Ph to Pka