Setting up the Keq expression:
Sodium sulfate 10−hydrate, Na 2SO4∙10H2O, dehydrates according to the equation
Na2SO4·10H2O(s) ⇌ Na2SO4(s) + 10H2O(g) K P = 4.08 x 10−25 at 25°C
What is the pressure of water vapor at equilibrium with a mixture of Na 2SO4∙10H2O and NaSO4?
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