Which statement about the shape or geometry of a molecule is not correct? a. Phy

Question

Which statement about the shape or geometry of a molecule is not correct? a. Physical properties of a substance are not affected by the shape of the molecules. b. Solubility of a substance in a solvent is affected by the shape of the molecules. c. Taste and aroma of a substance are affected by the shape of the molecules. d. The shape of a molecule refers to the three-dimensional arrangement of the atoms in space. e. Biological activity and chemical reactivity of a substance are affected by the shape of the molecules. Which statement about vapor pressure of a pure liquid is not correct? a. The temperature at which the vapor pressure equals 760 torr is called the normal boiling point of the substance. b. Substances with weak intermolecular forces have high vapor pressures at a given temperature. c. The vapor pressure increases with increasing surface area of the liquid. d. The vapor pressure is the pressure of the gas at a given temperature in equilibrium with its liqu

Explanation / Answer

Ans 10. A. Physical properties of a substance are not affected by the shape of molecules.

Physical, chemical and biological properties do depend upon the shape of molecule.

For eg, the boiling point of cis 1,2 - dichloroethene is 60.3°C whereas that of trans isomer is 47.5°C

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