Advertisements
Advertisements
Question
Define Enthalpy of vaporization
Solution
Enthalpy of vaporization (`Delta_"vap"H`): The enthalpy change that accompanies the vaporization of one mole of liquid without changing its temperature at constant pressure is called enthalpy of vaporization.
APPEARS IN
RELATED QUESTIONS
How is enthalpy of sublimation related to enthalpy of fusion and enthalpy of vaporization?
Define the Enthalpy of fusion
Define the Enthalpy of atomization
If the enthalpy of vaporisation of water at 100oC is 186.5 J.mol-1, the entropy of vaporization will be_____________ .
(a) 4.0 J . K-1. mol-1
(b) 3.0 J . K-l. mol-1
(c) 1.5 J - K-1. mol-1
(d) 0.5 J . K-l. mol-1
For a chemical reaction dS=0.035 kJ/k and dH=20kJ. At what temperature does the reaction turn nonspontaneous?
A system absorbs 640 J heat and does work of 260 J, the change in internal energy of the system will be
(a) +380J
(b) -380J
(c) +900J
(d) -900J
Define the term ‘enthalpy’.
What will happen to the internal energy if work is done by the system?
A system absorbs 6 kJ of heat and does 1.5 kJ of work on its surroundings. The change in internal energy is __________.
