Question

uhih of uhe tollawig compnds has the highest hoiiag poat A. E. 2

Answer 1

The compound D gas highest boiling point due to following reasons: The given compounds are alkens which has only London force and the strength of London force is depending on the following factors: 1. A straight chain alkene has higher than branched chain 2. Larger and heavier atoms and molecules exhibit stronger dispersion forces than smaller and lighter ones. The compound D is unbranded and heavier. A straight chain alkene will have a boiling point higher than a branched chain alkene because of the greater surface area in contact with other molecules Intermolecular forces are the forces that act between mole cules to other molecule as attraction. These are mainly three types: 1. Dipole-dipole interaction 2. Hydrogen bond 3. London force Dipole-dipole interaction: This type of interaction forces is found between polar molecules. The strength of this force is increasing with increasing polarity of molecules Hydrogen bond: Generally hydrogen bond is found in those molecules which have covalently hydrogen atom bonded with high electronegative atoms like oxygen, nitrogen and fluorine. In the covalent molecules the sharing electron moves towards these high electronegative atoms as the result they have partially negative charge and hydrogen atom contains partially positive charge. When these opposite charge come together they form hydrogen bond. Hydrogen bond is a type of intermolecular force which is denoted by dotted line London force: London force is an intermole cular force which occurs between an atoms or molecules which are polar or non-polar and another atom or molecule which are polar or non-polar. Hence it occurs between all molecules or atoms. The London dispersion force is a temporary attractive force which cause due to temporary dipoles of electrons in two adjacent atoms. This is also known as induced dipole-induced dipole attraction. It is a weakest Intermolecular force The strength of inter-molecular force is as follows: Hydrogen bonding > dipole dipole interaction dispersion or London force The boiling and melting point of the compounds depends on the strength of the functional groups, so first we will see at the functional groups to determine the strength of the intermolecular forces. The stronger the forces, the higher the boiling and melting point.