The polarity of dichloromethane and ethyl acetate is related to its molecular structure, charge distribution, and has a key impact on chemistry, such as dissolution and reaction. The polarity of dichloromethane (DCM) and ethyl acetate is discussed in detail.

For dichloromethane, its molecule is in the shape of a tetrahedron, with carbon in the center and dichlorodihydrogen in four weeks. Chlorine is more electronegative than carbon, causing the electron cloud to be biased towards the chlorine atom, resulting in a dipole moment. However, its structure has a certain symmetry. Although there is a dipole, the overall polarity is still limited.

Ethyl acetate, its structure contains carbonyl and ethoxy groups. In the carbonyl group, oxygen has strong electronegativity, which makes the carbonyl carbon positive; in the ethoxy group, oxygen also attracts electrons. The charge distribution of this molecule is uneven, but because of the interaction between the carbonyl group and the ethoxy group, and the overall symmetry of the molecule is different from that of dichloromethane, its polarity characteristics are also different.

Comparing the two, from the perspective of the dipole moment, the dipole moment of dichloromethane is relatively symmetrical due to its structure, and the value is specific. Ethyl acetate has a different value due to the synergistic effect of carbonyl and ethoxy. Usually experiments show that in the chromatographic analysis of some polar stationary phases, the retention time of dichloromethane is different from that of ethyl acetate, and this polarity is a characteristic of the difference. In terms of solubility, dichloromethane has good solubility to some non-polar or weakly polar organic compounds. Due to its limited polarity, it can dissolve with similar polarities. In addition to dissolving some organic compounds, ethyl acetate also has a certain solubility to slightly polar substances because of its polar groups, which is caused by the difference in polarity.

In summary, dichloromethane and ethyl acetate have their own polarities. They exhibit different properties and functions in different chemical situations, which is an element that cannot be ignored in chemical research and application.