The free energy of formation of a and b react

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Question- Two salts, A and B react to form AB. The free energy of formation of A= -1030 kJ/mol and fro B= -840 kJ/mol and for the product, AB=-2150kJ.mol

I found ?G=-280 kJ/mol but I don't know to find the change in enthalpy. The question states that the overall change from A and B to AB in the order of the system is negligible. Does this imply an entropy change, ?S, of 0 which would make the ?H=?G?

I am in urgent need of solution of above problem with complete explanation

Reference no: EM13698673

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