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Chemical Engineering - Stoichiometry

Exercise : Stoichiometry - Section 2
21.
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
temperature & pressure.
number of intermediate chemical reactions involved.
state of aggregation & the state of combination at the beginning & the end of the reaction.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
N.T.P. corresponds to
1 atm.absolute pressure& 0°C.
760 mm Hg gauge pressure & 0°C.
760 torr & 15°C.
101.325 KPa gauge pressure & 0°C.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
During a phase change process like sublimation, vaporisation, melting etc., the specific __________ does not change.
enthalpy
Gibbs free energy
internal energy
entropy
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Atomic __________ of an element is a whole number.
weight
number
volume
radius
Answer: Option
Explanation:
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25.
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies
0 < Xw < 0.5
Xw = 0.5
0.5 < Xw < 1.0
Xw = 1.0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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