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1.
Entropy change of vaporisation at constant pressure is given by:
2.
Given, 
<img width=243 height=36 src="https://mytat.co/uploads/question/THERMODYNAMICS-1_filesimage296.png">
<img width=298 height=20 src="https://mytat.co/uploads/question/THERMODYNAMICS-1_filesimage297.png">
The heat of formation in kcal will be :
<img width=243 height=36 src="https://mytat.co/uploads/question/THERMODYNAMICS-1_filesimage296.png">
<img width=298 height=20 src="https://mytat.co/uploads/question/THERMODYNAMICS-1_filesimage297.png">
The heat of formation in kcal will be :
3.
The enthalpy of formation of 
is 30.4 
. Which statement is false according to this observation?
is 30.4 . Which statement is false according to this observation?
4.
Mark the correct statement
5.
The entropy change for vaporisation of liquid water to steam at 
is...
Given that heat of vaporisation is 
.
is... Given that heat of vaporisation is .
6.
Given the bond energies of 
and 
bonds as 945, 436 and 39 kJ 
respectively, the enthalpy of the reaction, 
is :
and bonds as 945, 436 and 39 kJ respectively, the enthalpy of the reaction, is :
7.
When ammonium chloride is dissolved in water, the solution becomes cold. The change is:
8.
The Gibbs energy change and standard Gibbs energy change are equal if reaction quotient is equal to:
9.
The bond energy of 
is 104.3 kcal 
It means : (
is 104.3 kcal It means : (
10.
For the process, 