On the hydrophobicity of ethyl acetate
ethyl acetate, it is also a chemical substance. To understand whether it is hydrophilic or hydrophobic, its molecular structure needs to be investigated.

The molecular formula of ethyl acetate is $C_ {4} H_ {8} O_ {2} $, and its molecular structure contains carbonyl and ethoxy groups. Among the carbonyl groups, the carbon-oxygen double bond has strong polarity, and the oxygen has strong electronegativity, so that the carbonyl group is locally polar; however, the ethoxy part, the hydrocarbon chain has a certain non-polarity.

Looking at the whole, although there are polar carbonyl groups, the non-polar hydrocarbon chains of ethoxy groups have a great influence, and the molecular polarity is weak. For water, polar molecules are also, according to the principle of similar miscibility, ethyl acetate with weak polarity is difficult to dissolve in water with strong polarity, so ethyl acetate is hydrophobic.

It is proved by experimental phenomena. If ethyl acetate is mixed with water, the two are layered, and ethyl acetate is the top, which shows that it is insoluble with water and is also characterized by hydrophobicity.

In summary, ethyl acetate is a hydrophobic substance.