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The reaction between ethanoic acid and e...

The reaction between ethanoic acid and ethanol is reversible even in an open vessel.Why?

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Both ethanoic acid and ethanol are liquids. They are react to give ethylethanoate an ester. The ester reacts with the other product water to give back acid and alcohol. The ester formation reaction is reversible and is given as,
`CH_3COOH(l)+C_2H_5 OH(l) leftrightarrow CH_3COO C_2H_5 (l) +H_2O(l)`
Since there are no gases and the substances practically do not escape, the reaction is reversible even in a open vessel.
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AAKASH SERIES-CHEMICAL EQUILIBRIUM -QUESTIONS FOR DESCRIPTIVE ANSWERS
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  15. An equilibrium mixture N2O4 leftrightarrow 2NO2 at 300K contains N2O4 ...

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