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Thermodynamics question

2003 · Q116
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Thermodynamics question

2003 · Q116

NEETChemistryThermodynamicsMCQ+4 / −1
What is the entropy change (in J K−-−1 mol−-−1) when one mole of ice is converted into water at 0oC? (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol−-−1 at 0oC).
  1. A
    20.13
  2. B
    2.013
  3. C
    2.198
  4. D
    21.98
View written solutionFree

Correct answer: D

H2O(s) → H2O(l)

Δ\Delta ΔH = 6.0 kJ mol–1

T = 0 + 273 K = 273 K; Δ\Delta ΔS = ?

Δ\Delta ΔS = ΔHT{{\Delta H} \over T}TΔH​ = 6000273{{6000} \over {273}}2736000​ = 21.98 JK–1 mol–1

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