What is the main purpose for using metal-ions as catalysts in the following hydr

Question

What is the main purpose for using metal-ions as catalysts in the following hydrolysis reaction? increases the rate by making water a stronger base, thereby increasing its electrophilicity increases the rate by making water a stronger acid, thereby increasing its electrophilicity increases the rate by making water a stronger acid, thereby increasing its nucleophilicity increases the rate by making water a stronger acid, thereby decreasing its nucleophilicity increases the rate by making water a stronger base, thereby increasing its nucleophilicity

Explanation / Answer

Solutions of metal aquo complexes are acidic owing to the ionization of protons from the water and leaving strong nuclophile, which react with ester.

So,

Correct is: Metal ions: increases the rate by making watr a strong acid, thereby increasing its nucleophilicity.

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