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In which of the following changes is ∆S negative ?

In which of the following changes is ∆S negative ?
  • A.
    H2O(l) → H2O(s)
  • B.
    C(s) + 1/2O2,/sub>(g) → CO(g)
  • C.
    PCI5(g) → PCl3(g) + Cl2(g)
  • D.
    NaCl(s) + aq →Na+(aq) + Cl–(aq)
  • E.
    NH3(g) + HCl(g)
Correct Answer: Option A
Explanation

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