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At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is

At 0⁰C, 15 gm of ice melts to form water at 0⁰C. The change in entropy is

Options

(a) zero
(b) 18.5
(c) 15
(d) None of these

Correct Answer:

18.5

Explanation:

Heat absorbed = mL cal. = mL J joule
Change of entropy ∆S = Heat/Temperature
∆S = mLJ / Temperature = (15×80×4.2) / 273
∆S = 18.46 J/K.

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