Glauber’s salt, Na2SO4·10H2O, was used by J. R. Glauber in the 17 th century as a medicinal agent. At 25°C, Kp = 4.08×10−25 for the loss of waters of hydration from Glauber’s salt:
Na 2SO4·10H2O(s) ⥫⥬ Na2SO4(s) + 10H2O(g)
(a) What is the vapor pressure of water at 25°C in a closed container holding a sample of Na2SO4·10H2O(s)?
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