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ThermodynamicsMCQ

The Ksp of AgBr is 5.0  10–13 at 25.0 ºC and 6.5  10–12 at 50.0 ºC. What is ∆Hºrxn for the precipiThermodynamics Chemistry Question

Question

The Ksp of AgBr is 5.0  10–13 at 25.0 ºC and 6.5  10–12 at 50.0 ºC. What is ∆Hºrxn for the precipitation of AgBr shown?
Ag+(aq) + Br–(aq)  AgBr(s) ∆Hºrxn = ???

A.

–82 kJ mol–1

✓ Correct
B.

–1.1 kJ mol–1

C.

1.1 kJ mol–1

D.

82 kJ mol–1

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