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Chemical Engineering - Chemical Engineering Thermodynamics

Exercise : Chemical Engineering Thermodynamics - Section 11
6.
If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) C3H8(g) will be __________ Kcal.
-19.4
-30.2
55.2
-55.2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Helmholtz free energy (A) is defined as
A = H - TS
A = E - TS
A = H + TS
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches
zero
unity
infinity
an indeterminate value
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
For any system, what is the minimum number of degrees of freedom?
1
0
2
3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is
1.572
1.9398
3.389
4.238
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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