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16 January, 13:06

At what temperature will the following reaction happen spontaneously, given that ΔH=8.91*103J and ΔS = - 219.20 J/K? CaSO4 (s) + 2HCl (g) → CaCl2 (s) + H2SO4 (l)

A) at 298 K

B) at 100 K

C) It is spontaneous at any temperature.

D) It is not spontaneous at any temperature.

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Answers (1)
  1. 16 January, 13:19
    0
    DG = DH - TDS

    For this reaction DH>0 and DS<0. So, d. the reaction is not spontaneous at any temperature.
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