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For a reaction both DeltaH and DeltaS ar...

For a reaction both `DeltaH` and `DeltaS` are positive.Under what conditions does the reaction occur spontaneously?

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To determine the conditions under which a reaction occurs spontaneously when both ΔH (change in enthalpy) and ΔS (change in entropy) are positive, we can use the Gibbs free energy equation: ### Step-by-Step Solution: 1. **Understand the Gibbs Free Energy Equation**: The Gibbs free energy (ΔG) is given by the equation: \[ ΔG = ΔH - TΔS ...
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MODERN PUBLICATION-THERMODYNAMICS-Revision Exercise (Short Answer Questions)
  1. Predict whether the entropy increases or decreases for the following :...

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  2. Define entropy and free energy of a system.Predict the feasibility of ...

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  3. For a reaction both DeltaH and DeltaS are positive.Under what conditio...

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  4. Explain the physical significance of entropy.

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  5. Predict the sign of DeltaS (positive or negative) for the following ch...

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  6. State giving reasons whether the entropy change for vaporisation of on...

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  7. What is entropy change?Predict the sign of entropy chsnge in each of t...

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  8. What is the value of free energy chnage for a reaction in equilibrium ...

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  9. Comment on the statement that the energy of the universe remains const...

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  10. Which of the reaction is expectd to be spontaneous at low temperatures...

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  11. Wha is menat by free energy of a system? How is it related to enthalpy...

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  12. State and explain Gibbs Helmholtz equation.

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  13. Predict or decrease of entropy : (a) Br(2)(g) to Br(g) (b) H(2)O(...

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  14. Predict the enthalpy change, free energy change and entropy change whe...

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  15. Define the terms: (i) Free energy (ii) Thermodynamic equilibrium ...

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  16. Neither the enthalpy change nor the entropy change alone can be used t...

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  17. Predict the sign of DeltaG for a reaction that is (a) Exothermic and...

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  18. What is Gibbs free energy change? Discuss its physical significance.

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  19. Explain the following: (a) The entropy of a substance increases on g...

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  20. How will you distinguish between the two? (i) Open and closed system...

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