Acid/Base

Question 0

Bronsted-lowry definition for acids?

Answer 0

Proton donors

Question 1

Excess acid/base?

Answer 1

Find moles, the one with the larger number will be in excess, subtract moles

Question 2

Bronsted-lowry definition for bases?

Answer 2

Proton acceptors

Question 3

Amphiprotic species?

Answer 3

Hydrogenated polyatomic ions, can be both an acid/base

Question 4

Conjugate acid/base pairs always differ by….?

Answer 4

1 hydrogen ion

Question 5

Adding acid increases ……… shifting rxn …… Which causes indicator to produce ….

Answer 5

Conc. of hydronium
Away
Acid color

Question 6

Adding base increases…….shifting rxn……causing the indicator to produce…….

Answer 6

Conc. of hydroxide
Towards
Basic color

Question 7

What determins the position of the equilibrium?

Answer 7

A competition of protons that result in a proton transfer from SA to SB

Question 8

General arrow rules:
A) SA w SB
B) acid above base
C) acid below base

Answer 8

A) quantitative (>99%)
B) >50%
C) <50%

Question 9

Predicting rxns

• aq ionic compounds/SB
• SA
• WA/WB
• metals

Answer 9

• seperate into ions
• produce H3O+ & a negative ion
• written as molecule
• spectator

Question 10

Monoprotic acids/bases

Answer 10

Can donate/recieve 1 proton

Question 11

Polyprotic acids/bases

Answer 11

Can donate/recieve more than 1 proton

Do all steps if it says quantitative

Question 12

Equivalence pt if graphing SA & SB

Answer 12

7

Question 13

Endpoint?

Answer 13

Drop in pH
SA/SB-steep slope
WA/WB-shallow slope

Question 14

Equivalence point

Answer 14

Chemically equal amounts of acid/base, distinct point

Question 15

Buffering region

Answer 15

First horizontal portion, small change in pH 
# of buffering regions = # of endpoints

Question 16

If graphing weaker species?

Answer 16

Equivalence pt is pulled in direction of stronger species

Question 17

Buffers?

Answer 17

Weak acid/base conjugate pairs

Added to maintain a constant pH