CHEM1084_U3_LAB 3_PrelaPre Lab Questions1. Define entropy. What are the units of entropy?2. How does...

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CHEM1084_U3_LAB 3_PrelaPre Lab Questions1. Define entropy. What are the units of entropy?2. How does the entropy of the system change for the following processes (a) Melting of ice (b) Condensing of water vapor?3. What is Gis free energy? What are its units?4. Explain the second law of thermodynamics.5. What are the circumstances under which endothermic reaction proceeds spontaneously?

Rahul · Accepted Answer

CHEM1084_U3_LAB 3_Prelab
Pre Lab Questions
1. Define entropy. What are the units of entropy?
Solution-   A system requires thermal energy for work done. The system’s thermal energy per unit temperature that is unavailable for some useful work is known as entropy. Entropy is also called the randomness of the system or molecular disorder of the system. The greater the randomness the higher the entropy will be.
According to Clausius's statement, the entropy always increases if an amount of heat flows into a large heat reservoir. That is,
                                                                      ∆S = Q/T,
Where ∆S changes in entropy (increase), Q is heat flow into the system and T is the temperature of the reservoir.
Note:

CHEM1084_U3_LAB 3_Prelab Pre Lab Questions 1. Define entropy. What are the units of entropy? 2. How does the entropy of the system change for the following processes (a) Melting of ice (b) Condensing...

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