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17 May, 00:01

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

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  1. 17 May, 00:45
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    In order for a certain reaction to be spontaneous, the change in Gibb's free energy must be negative, that is:

    dG < 0

    We can calculate dG using:

    dG = dH - dS

    When we plug in the given values, we see that the sign of dG will never be negative; therefore, the reaction will not be spontaneous under any conditions.
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