Chemical Thermodynamics
- Created by: Broken Rose
- Created on: 14-12-14 04:54
Other questions in this quiz
2. Which of these statements is not related to entropy
- An Isolated system spontaneously passes to the most probable state (a macroscopic state with the highest no. of microscopic state)
- Inequality of Clausius - (when energy changes form- some part is lost as entropy)
- Entropy increases until equilibrium is reached in an isolated system
- At equlibrium entropy always decreases in an isolated sytsem
- Change in S> change in H / T
- Entropy never decreases in an isolated system
- S= Kb ln W
3. What does Gibbs energy express?
- it expresses the energy that can NOT be converted during a chemical reaction to useful (pressure volume) work
- it expresses the energy that can be converted during a chemical reaction to useful (pressure volume) work
- it expresses the energy that can be converted during a chemical reaction to useful (non pressure volume) work
- it expresses the energy that can NOT be converted during a chemical reaction to useful (non pressure volume) work
4. Which of these systems is incorrect?
- Closed system - Matter and energy not exchanged with the surroundings
- Open System - exchange of matter and energy with the surroundings
- Isolated system - Matter and energy not exchanged with the surroundings
5. Which of these is NOT an expression for Change in Gibbs energy?
- ΔG = ΔU + QW
- ΔG=∑ΔG(f-products)−∑ΔG(f-reactants)
- ΔG=ΔH−TΔS
- ΔG=−nFE (Faraday's constant for redox reactions)
- ΔG=ΔG0+RTlnQ
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