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What would you predict for the sign of delta h and delta s for the dissolution...

What would you predict for the sign of delta h and delta s for the dissolution of NaF?
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Answer #1

NaF (s)   + H2O (l) -----------------------> NaOH (aq) + HF (aq)

Hrxn = Hproducts - Hreactants

              = (-469.2 -332.6 ) - (-573.7- 285.5))

              = - 801.8 + 859.2

             = + 54.7 kJ /mol

sign of H positive .

but sign of S is negative . it is due to solid to aqua randomnesss increases.

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