1) How much enthalpy is necessary to heat 10.0 g of solid benzene (CoH6) at 0.0°C to benzene vapor at 100°C? Data for Benzene melting point boiling point 5.5°C 80.1â specific heat of solid benzene 11.52 JEC specific heat of liquid benzene 11.73 J/g°C specific heat of benzene vapor 1.06 Jg AH ali. 99 kJ/mol 30.8 kJ/mol AH
A 23.20 g sample of liquid n-pentane is initially at -62.30 °C. If the sample is heated at constant pressure (P = 1 atm), calculate the amount of energy in kJ needed to raise the temperature of the sample to 58.10 °C.
2.) The following information is given for water, H2O, at 1 atm:
boiling point = 100 °C
Hvap(100 °C) = 40.7 kJ/mol
melting point = 0.00 °C
Hfus(0.00 °C) = 6.01 kJ/mol
specific heat liquid = 4.18 J/g°C
At a pressure of 1 atm, what is H in kJ for the process of condensing a 43.2 g sample of gaseous water at its normal boiling point of 100 °C.
3.) The following information is given for benzene, C6H6, at 1 atm:
boiling point = 80.1 °C
Hvap(80.1 °C) = 30.7 kJ/mol
melting point = 5.50 °C
Hfus(5.50 °C) = 9.95 kJ/mol
specific heat liquid = 1.74 J/g°C
At a pressure of 1 atm, _____ kJ of heat are needed to vaporize a 47.4 g sample of liquid benzene at its normal boiling point of 80.1 °C.