Chapter10: Effect Of Electrolytes On Chemical Equilibria
Section: Chapter Questions
Problem 10.8QAP
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Question
Why is it possible to titrate a reaction mixture directly to find the equilibrium concentrations during the following reaction:

Transcribed Image Text:3 A student carried out an experiment to determine the equilibrium constant for the
reaction to form ethyl ethanoate from ethanol and ethanoic acid.
CH;COOH + CH,CH,OH = CH,COOCH,CH, + H,0
Different amounts of each substance were added to conical flasks, each containing
2.0 cm of 1.0 mol dm hydrochloric acid.
-3
Volume added / cm
.3
Conical
HCL
H,O
(1)
CH,COOH
(1)
CH,COOCH,CH,
(1)
flask
CH,CH,OH
(1)
(aq)
2.0
1.0
2.0
2.0
5.0
0.
5.0
3
2.0
4.0
3.0
4
2.0
0.
3.0
The flasks were then stoppered and left for a week to reach equilibrium.
-3
Each mixture was then titrated with 1.0mol dm sodium hydroxide.
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