Problem: The free-energy change, ΔG°, for the ionization of acid HA is 21 kJ mol-1 ; for acid HB it is -21 kJ mol-1 . Which is the stronger acid? 

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The free-energy change, ΔG°, for the ionization of acid HA is 21 kJ mol-1 ; for acid HB it is -21 kJ mol-1 . Which is the stronger acid?

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Our data indicates that this problem or a close variation was asked in Organic Chemistry - Solomons 10th Edition. You can also practice Organic Chemistry - Solomons 10th Edition practice problems.