The polarity of ethyl acetate is related to its molecular structure and charge distribution, and has a key impact on everything in chemistry, such as dissolution and reaction. Today, ethyl acetate is used as a study to investigate its polarity in detail. The chemical formula of

ethyl acetate is $C_ {4} H_ {8} O_ {2} $. Its molecular structure contains carbonyl ($C = O $) and ethoxy ($- OC_ {2} H_ {5} $). In carbonyl, carbon and oxygen are connected by double bonds, and the electronegativity of oxygen is stronger than that of carbon. Therefore, the electron cloud is biased towards the oxygen atom, making carbonyl carbon positive and oxygen negative. This is an important source of polarity. In the ethoxy group, the carbon-oxygen single bond also causes the electron cloud to shift due to electronegativity differences, but the degree is slightly weaker than that of the carbonyl group.

Looking at the whole molecule, although it has a certain symmetry, the polar effect of the carbonyl group is significant, which makes the molecular charge distribution uneven. Therefore, ethyl acetate has polarity, but its polarity is weak. This property makes it unique in solvent selection. It can dissolve some organic compounds with a certain polarity, but has limited solubility to strongly polar substances. Such as some resins, fragrances, etc., soluble in ethyl acetate, but less soluble in water.

In summary, ethyl acetate is a weakly polar substance, and its polarity is derived from a specific molecular structure. This property has a profound impact on its chemical and physical properties, and is widely used in chemical, pharmaceutical and other fields.