Question

explain, in therms of intermolecular forces, why greasy engine parts are better cleaned using petrol or kerosene as the solvent than water.

Answer 1

Grease is insoluble in water but soluble in kerosene

Step-by-step explanation:

The molecules in grease are non polar molecules and so can not react with water which is polar to generate enough solvation energy. On the other hand kerosine is non polar so reacts with grease to generate enough solvation energy to dissolve it.