Glaubers salt, Na2SO4 10H2O, was used by J. R. Glauber in the 17th century as a

QUESTION:

Glaubers salt, Na2SO4 10H2O, was used by J. R. Glauber in the 17th century as a medicinal agent. At 25_C, Kp _ 4.08_10_25 for the loss of water of hydration from Glaubers salt: (a) What is the vapor pressure of water at 25_C in a closed container holding a sample of Na2SO4_10H2O(s)? (b) How do the following changes affect the ratio (higher, lower, same) of hydrated form to anhydrous form for the system above? (1) Add more Na2SO4(s) (2) Reduce the container volume (3) Add more water vapor (4) Add N2 gas