Hydrolysis refers to which of the following?

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Multiple Choice

Hydrolysis refers to which of the following?

Explanation:
Hydrolysis is a chemical breakdown caused by water. In ester-based lubricants (like POE), water can attack the ester bonds and split the molecule into acids and alcohols, degrading the oil and potentially causing corrosion or sludge. That’s why the description “oil breaks down in the presence of water” is the best fit. The other options describe different phenomena: oxidation involves oxygen, not water; gas dissolving in oil is just solubility, not a chemical reaction; and oil thickening in cold conditions is a temperature-related viscosity change, not hydrolysis.

Hydrolysis is a chemical breakdown caused by water. In ester-based lubricants (like POE), water can attack the ester bonds and split the molecule into acids and alcohols, degrading the oil and potentially causing corrosion or sludge. That’s why the description “oil breaks down in the presence of water” is the best fit.

The other options describe different phenomena: oxidation involves oxygen, not water; gas dissolving in oil is just solubility, not a chemical reaction; and oil thickening in cold conditions is a temperature-related viscosity change, not hydrolysis.

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