InterviewSolution
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InterviewSolution
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Predict in which of the following , entropy increases `//` decreases . (i) A liquid crystallizes into a solid (ii) Temperaure of a crystalline solid israised from 0Kto 115K (iii) `2 NaHCO_(3)(s) rarr Na_(2)CO_(3)(s) + CO_(2)(g) + H_(2)O(g)` (iv)` H_(2)(g) rarr 2H(g)` |
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Answer» (i) Decreases because a solid has ordered arrangement of constituent particles. (ii) Increases because at 0K,there is a perfect order of constituent particles. As temperature is increased , the particle start vibrating about their equilibrium position. Hence, a disorder sets in. (iii)Increases because the reactant is solid whereas products have gaseous substances. (iv) Increases because the products havelarger (double) number of particles. |
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