
Chemical Thermodynamics Quiz 5
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Popular Questions In Chemical Thermodynamics Quiz 5
A substance which shows highest entropy is
For a reaction, at 300K enthalpy is 138 kJ and entropy change is 115 . Hence the free energy change of the reaction is
Bond enthalpies of , and HI are 436, 151 and 298 kJ respectively. Hence enthalpy of formation of is
The average bond energy of C-H bond is 410 . The enthalpy change of atomisation of is
For a certain reaction, = -50 kJ and = -80 , at what temperature does the reaction turn from spontaneous to non-spontaneous.
Third law of thermodynamics provides a method to evaluate which property?
One mole of which of the following has the highest entropy?
The species which by definition has ZERO standard molar enthalpy of formation at 298 K is
In a reversible process the system absorbs 600 kJ heat and performs 250 kJ work on the surroundings. What is the increase in the internal energy of the system?
In a system where = -51.0 kJ, a piston expanded against a pext of 1.2 atm giving a change in volume of 32.0 L. What was the change in heat of this system?