Acids and Bases Flashcards

1
Q

Arrenhius Acid

A

will dissociate to form an excess of H+ in solution

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2
Q

Arrenhius Base

A

will dissociate to form an excess of OH- in solution

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3
Q

BL acids and bases

A

H+ donors and acceptors

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4
Q

Lewis acid and base

A

electron pair acceptor and donor

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5
Q

amphoteric

A

reacts like an acid in basic environment and base in acidic environment

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6
Q

examples of amphoteric species

A
  • partially dissociated conjugate base of polyvalent acid
  • water
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7
Q

phosphoric acid

A

H3PO4

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8
Q

Boric acid

A

H3BO3

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9
Q

chromic acid

A

H2CrO4

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10
Q

water dissociation constant

A

Kw = [H3O+][OH-] = 10^-14

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11
Q

pH

A

pH = -log[H+] = log 1/[H+]

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12
Q

pOH

A

pOH = -log[OH-] = log 1/[OH-]

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13
Q

pH + pOH

A

14

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14
Q

relationship between pKa, pKb, pH, and pOH

A

pH = pKa + log([A-]/[HA])

pOH = pKb + log([salt]/[base])

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15
Q

Ka

A

Ka = [H3O+][A-]/[HA]

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16
Q

Kb

A

Kb = [B+][OH-]/[BOH]

17
Q

adding electroneg atoms…

A

inc acidity because of inductive effects

18
Q

indicator color changes at…

A

the endpoint

19
Q

equivalence point

A

completion of rxn between the titrant and the titrand

20
Q

strong acid + weak base eq point

A

pH < 7

21
Q

strong acid + strong base eq point

A

pH = 7

22
Q

weak acid + strong base eq point

A

pH > 7

23
Q

phenolphthalein

A

pKa = 9.7 turns pink

24
Q

bromothymol blue

A

pKa = 7.1 green but yellow in acidic blue in basic

25
Q

bromocresol green

A

pKa = 4.7 yellow to blue

26
Q

methyl yellow

A

pKa = 3.3 turns orange