Respuesta :
The CH4 , CH3OH , H2CO these have high vapor pressure.
What is vapor pressure?
Vapor pressure rises with temperature and measures a substance's propensity to transform into a gaseous or vapor state. The boiling point of a liquid is the temperature at which the vapor pressure present at its surface equals the atmospheric pressure.
What is temperature ?
The average kinetic energy of all the atoms or molecules in a given material, expressed as its temperature. The kinetic energy of a substance's particles varies. A distribution can be used to show how the particles' kinetic energy is distributed at any particular moment.
Higher the magnitude of intermolecular bonding, lower will be the vapor pressure.
(a). Ans :- CH4
CH4 = Low molecular mass, therefore magnitude of vander waal's forces is less and hence have high vapor pressure.
CH3Cl = High molecular mass, therefore magnitude of vander waal's forces is more and hence low vapor pressure.
(b). Ans :- CH3OH
Both CH3OH and CH3CH2CH2OH form intermolecular hydrogen bonding but intermolecular bond in CH3CH2CH2OH are more strong. Hence, CH3OH have high vapor pressure.
(c). Ans :- H2CO
H2CO for dispersion forces while CH3OH form strong intermolecular H-bonding, So, H2CO have high vapor pressure.
Therefore, CH4 , CH3OH , H2CO these have high vapor pressure.
Learn more about vapor pressure from the given link.
https://brainly.com/question/2693029
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