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Tuesday, 07 April 2026
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(a) State whether entropy increases or decreases during each of the following ...

(a) State whether entropy increases or decreases during each of the following processes
(i) condensation of steam;
(ii) melting of wax;
(iii) dissolution of sugar in water;
(iv) abscas on charcoal.

(b) What deduction can be made in each case given that the value of the free energy change for a particular reaction is:
(i) zero;
ii) negative
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    Correct Answer: Option n
    Explanation:
    (a) (i) The entropy decreases
    (ii) The entropy increases
    (iii) The entropy increases
    (iv) The entropy decreases.

    (b)(i) The reaction is at equilibrium.
    (iii) The reaction is feasible.

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