A 0.0258-g sample of an unknown acid was titrated with 0.04983 M KOH solution. Using the given data, determine the identity of the acid by using the volume at equivalence point obtained from the first-derivative plot. Make sure to include the first-derivative plot in your solution to get full credit for this question.

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Chapter1: Chemical Foundations
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A 0.0258-g sample of an unknown acid was titrated with 0.04983 M KOH solution. Using the given data, determine the identity of
the acid by using the volume at equivalence point obtained from the first-derivative plot. Make sure to include the first-derivative
plot in your solution to get full credit for this question.
Volume of titrant, ml
PH
Volume of titrant, mL
pH
1.8
10.5
1.5
2
12
5.4
3
2.1
13.5
6.4
4.5
2.1
15
6.7
6
2.1
16.5
6.9
7.5
2.2
18
7.1
9.
2.3
19.5
7.4
A) lodic acid, EW = 175.91 g/eq
B Nitrous acid, EW = 47.01 g/eq
c) Formic acid, EW = 46.02 g/eq
D) Acetic acid, EW = 60.05 g/eq
3.
Transcribed Image Text:A 0.0258-g sample of an unknown acid was titrated with 0.04983 M KOH solution. Using the given data, determine the identity of the acid by using the volume at equivalence point obtained from the first-derivative plot. Make sure to include the first-derivative plot in your solution to get full credit for this question. Volume of titrant, ml PH Volume of titrant, mL pH 1.8 10.5 1.5 2 12 5.4 3 2.1 13.5 6.4 4.5 2.1 15 6.7 6 2.1 16.5 6.9 7.5 2.2 18 7.1 9. 2.3 19.5 7.4 A) lodic acid, EW = 175.91 g/eq B Nitrous acid, EW = 47.01 g/eq c) Formic acid, EW = 46.02 g/eq D) Acetic acid, EW = 60.05 g/eq 3.
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