Respuesta :
Methanol has the larger vapor pressure at room temperature because it has a lower molecular weight when compared with ethanol, which implies it has weaker intermolecular forces.
Answer:
Methanol
Explanation:
From the options given in the question ,
Methanol has the highest vapor pressure at room temperature ,
As methanol ( CH₄O ) has lower molecular mass as compare to ethanol ( C₂H₆O ) ,
The molecules with higher molecular mass , have stronger interaction , i.e. , London - dispersion forces .
Therefore , due to stronger interaction between the atoms , it becomes difficult to vaporize the liquid and to generate the vapors of the respective liquid , and , therefore , lesser vapor pressure .
