# Page 27
Data:
|
| Trial 1
| Trial 2
| Trial 3
| Trial 4
| Trial 5
| Trial 6
|
| Amount of vinegar
| 10mL
| 10mL
| 10mL
| 10mL
| 10mL
| 10mL
|
| Initial NaOH
| 1mL
| 9.9mL
| 18.0mL
| 26.2mL
| 34.4mL
| 36.65mL
|
| Final NaOH
| 9.9mL
| 18.0mL
| 26.2mL
| 34.4mL
| 42.65mL
| 44.6mL
|
Observations:
First trial turned dark pink, too much NaOH. Accidentally let out a stream of NaOH near the endpoint. Trial 2 was a light pink, better than trial 1. Trial 3 was terrible. I accidentally added a stream of NaOH. Trial 4 was clear. half a drop turned it pink. Trial 5 was also a drop over from being clear and pink. Trial 6, you can barely tell that it is pink. If you look really close, you can see a very faint pink. It is really close to perfect. With some distilled water.
Analysis: CH3COOH+NaOH->CH3COONa+H2O
Trial 1:
9.90mL-1.00mL=8.90mL NaOH used
1.00M\*8.90mL/1000=0.0089 mol NaOH
0.0089 mol/10mL/1000=0.890M Acetic Acid
Trial 2:
18.0mL-9.9mL=8.1mL
(8.1/1000)/(10mL/1000)=0.81M
Trial 3:
26.2mL-18.0mL=8.2mL
(8.2mL/1000)/(10mL/1000)=0.82M