Initial burette reading (mL) 2.29   1.41   1.95   Molarity of NaOH (M) 0.100   0.100   0.100   Volume of vinegar sample (mL) 5.00   5.00   5.00   Final burette reading (mL) 50.37   49.39   49.84   Expected color at end point       Volume of NaOH used (mL) 48.08   47.98   47.89  Compute for the ff: a.   Average moles of acetic acid (mol)? b.  Average molarity of acetic acid (M)? c.  Average molarity of acetic acid (M)?

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter5: Errors In Chemical Analyses
Section: Chapter Questions
Problem 5.10QAP
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Trial 1
Trial 2
Trial 3
Initial burette reading (mL)
2.29
 
1.41
 
1.95
 
Molarity of NaOH (M)
0.100
 
0.100
 
0.100
 
Volume of vinegar sample (mL)
5.00
 
5.00
 
5.00
 
Final burette reading (mL)
50.37
 
49.39
 
49.84
Table 2. Titration data
 
Trial 1
Trial 2
Trial 3
Initial burette reading (mL)
2.29
 
1.41
 
1.95
 
Molarity of NaOH (M)
0.100
 
0.100
 
0.100
 
Volume of vinegar sample (mL)
5.00
 
5.00
 
5.00
 
Final burette reading (mL)
50.37
 
49.39
 
49.84
 
Expected color at end point
 
 
 
Volume of NaOH used (mL)
48.08
 
47.98
 
47.89

 Compute for the ff:

a.   Average moles of acetic acid (mol)?

b.  Average molarity of acetic acid (M)?

c.  Average molarity of acetic acid (M)?

 

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