Referring to Parts A & B in the experiment, indicate whether the following compo

Question

Referring to Parts A & B in the experiment, indicate whether the following compounds are polar or non-polar. Compound Polar or Non-Polar ethylene glycol ___ oil ___ biphenyl ___ hexane ___ sugar ___ Referring to Part C in the experiment, indicate the stronger attractive force by circling one choice below. Water-plastic refers to the attraction of water to plastic while water-glass refers to the attraction of water to glass. Explain your choice. water- plastic or water-glass Referring to Part C in the experiment, what effect does soap have on the surface tension of water? The same intermolecular force is responsible for attraction between hexane molecules and oil molecules. Referring to Part D in the experiment, why does oil have a greater viscosity than hexane? Hexane is a much larger molecule than water. Referring to Part E of the experiment, explain why water has a higher boiling point than hexane.

Explanation / Answer

Polar and non polar nature of the compoud is decided based the electronegativity difference between the bonded atoms.

ionic compounds are polar and polar compouds have greter electronegativity difference between bonded atoms.

The bond between same atoms is nonpolar. In Non polar copoundes the bondeded aotms have nearly same electronegativity.

Ethylele glycol            POLAR.

Oil                               NONPOLAR

Biphenyl                     NONPOLAR

Hexane                      NONPOLAR

Sugar                          POLAR

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