Question:

Value of the Ksp' for the reaction above is 1.0 x 10-6 at 25°C.What is the value of delta G?

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BaF2<-> Ba2+ + 2F-

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  1. ΔG = -RTlnK, where

    R = 0.008314 kJK-1mol-1

    T = 298 (in Kelvins)

    K = 1.0E-6

    ΔG = -(0.008314)(298)(1.0E-6) = 2.48E-6 kJ

    Since ΔG is &gt; 0, it&#039;s non-spontaneous at 298K.

    [Answer: see above]

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