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Chemical Engineering - Chemical Engineering Thermodynamics

Exercise : Chemical Engineering Thermodynamics - Section 3
21.
Gibbs free energy (G) is represented by, G = H - TS, whereas Helmholtz free energy, (A) is given by, A = E - TS. Which of the following is the Gibbs-Helmholtz equation
both (a) and (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which of the following is an undesirable characteristics of a refrigerant ?
It should be non-explosive.
It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils.
Its vapor pressure at the condenser temperature should be very high.
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
"The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances". This is the
Lewis-Randall rule.
statement of Vant-Hoff equation.
Le-Chatelier's principle.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
What is the ratio of adiabatic compressibility to isothermal compressibility ?
1
< 1
> 1
>> 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The absolute entropy for all crystalline substances at absolute zero temperature is
zero
negative
more than zero
indeterminate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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