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Question
Define the following terms:
Pseudo first-order reaction
Solution
Pseudo first-order reaction
Pseudo first-order reaction: The reaction which is bimolecular but whose order is one is called pseudo first-order reaction. This happens when one of the reactants is present in a large amount. For example, in acidic hydrolysis of ester (ethyl acetate), water is present in a large quantity.
CH3COOC2H5 + H2O →→ CH3COOH + C2H5OH
Similarly, inversion of cane sugar or hydrolysis of cane sugar is an example of pseudo first-order reaction.
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