1. Volume of base added to reach equivalence point 2. Volume of base added at the half-equivalence point 3. pH at the half-equivalence point 4. pK 5. K

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Chapter1: Chemical Foundations
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Table 2 Determination of the K, of an Unknown Weak Acid.
Number of unknown acid:
Trial #1
Trial #2
1. Volume of base added to reach equivalence point
mL
mL
2. Volume of base added at the half-equivalence point
mL
mL
3. pH at the half-equivalence point
4. pK,
5. K
Calculations (see Introduction):
Average K,:
Transcribed Image Text:Table 2 Determination of the K, of an Unknown Weak Acid. Number of unknown acid: Trial #1 Trial #2 1. Volume of base added to reach equivalence point mL mL 2. Volume of base added at the half-equivalence point mL mL 3. pH at the half-equivalence point 4. pK, 5. K Calculations (see Introduction): Average K,:
Table 1 Titration Data.
Trial #1
Trial #1 (continued)
Trial #2
Trial #2 (continued)
Volume of
Volume of
NAOH added
(mL)
Volume of
Volume of
NAOH added
(mL)
pH
NAOH added
pH
pH
NaOH added
pH
(mL)
(mL)
4.30 Iml
4.51
4.44
4,95
4..30
4.52
4.98
4.95
S.15
5.30
0.00
0.00
2.
2.
3.
5.28
S.S2
$,505.50
5.90
S.80
S, 8
6.04
6.20
16.50
T.16
10.10 7.6
10.20 8.32
1U.308.78
0.40 9.28
10.509.57
A0.21
1.08
So64
S,g6
6.07
6.64
4.5
8.0
8.3
16
12
a.s
10
12
14
169
4.62
Transcribed Image Text:Table 1 Titration Data. Trial #1 Trial #1 (continued) Trial #2 Trial #2 (continued) Volume of Volume of NAOH added (mL) Volume of Volume of NAOH added (mL) pH NAOH added pH pH NaOH added pH (mL) (mL) 4.30 Iml 4.51 4.44 4,95 4..30 4.52 4.98 4.95 S.15 5.30 0.00 0.00 2. 2. 3. 5.28 S.S2 $,505.50 5.90 S.80 S, 8 6.04 6.20 16.50 T.16 10.10 7.6 10.20 8.32 1U.308.78 0.40 9.28 10.509.57 A0.21 1.08 So64 S,g6 6.07 6.64 4.5 8.0 8.3 16 12 a.s 10 12 14 169 4.62
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