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How does entropy change with (i) increas...

How does entropy change with (i) increase in temperature, (ii) decrease in pressure?

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Entropy
(i) increases with increases in temperature.
(ii) Entropy is the degree of randomness of the system. If pressure on the system is increased, in general the randomness of the particles gets reduced this is because the volume of system i.e. space available for the movement of the particle decrease with the increase in pressure and vice versa.
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  • Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air ? (i) increase in pressure (ii) increase in temperature (iii) decrease in pressure (iv) decrease in temperature

    A
    (i) and (ii)
    B
    (i) and (iii)
    C
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    A
    `(ii),(iii)`
    B
    `(i),(iii)`
    C
    `(i),(iv)`
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    • MODERN PUBLICATION-THERMODYNAMICS-Conceptual Questions - 3
    1. How does entropy change with (i) increase in temperature, (ii) decreas...

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    2. What is entropy ? Is the entropy of the universe constant?

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    3. What is the value of change in entropy at equilibrium?

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    4. Arrange water vapour, liquid water and ice in the order of increasing ...

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    5. Do you expect DeltaS to be +ve, -ve, or zero for the reaction H(2)(g...

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    6. Place the following systems in order of increasing randomness : (a)1...

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    7. Which of the following processes are accompanied by increase or entrop...

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    8. Predict the sign of entropy change for each of the following changes o...

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    9. Predict the entropy change (positive / negative) in the following: (...

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    10. If standard free energy change for a reaction is found to be zero, wha...

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    11. What is the value of DeltaG at melting point of ice?

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    12. Relate free energy with equillibrium constant. For a reaction both Del...

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    13. Comment on the following statements: (a) An exothermic reaction is a...

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    14. The standard molar entropy of H(2)O(l) is 70 J K^(-1) "mol"^(-1).Wil...

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    15. Which quantity out of Delta(r)G or Delta(r)G^(@) will be zero at equil...

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    16. Why is entropy of substance taken as zero at absolute zero of temperat...

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    17. Predict the signs ofDeltaH and DeltaS for the reaction : 2CI(g) to C...

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    18. An exothermic reaction X to Y is spontaneous in the backward direction...

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