The normal boiling point of liquid ethyl amine is 290 K Assu

The normal boiling point of liquid ethyl amine is 290 K. Assuming that its molar heat of vaporization is constant at 28.4 kJ/mol, the boiling point of C₂H₅NH₂ when the external pressure is 0.709 atm is K.

Solution

from clausius claperyon equation

ln(p2/p1)=L/R*((1/T1)-(1/T2))

ln(0.709/1)=28.4*10^(3)/8.314 *((1/290)-(1/T2))

T2=281.7733K