Plaster of Paris, CaSO4 • ½ H2O(s), reacts with liquid water to form gypsum, CaSO4•2H2O(s). a....
Plaster of Paris, CaSO4 • ½ H2O(s), reacts with liquid water to form gypsum, CaSO4•2H2O(s).
a. Write a balanced chemical equation for this reaction.
b. Use the information provided below to determine if the formation of gypsum is spontaneous under standard state conditions.
*Please show all of your work on your pdf; you can leave this answer box blank if you want.*
|
Substance |
ΔG°f (kJ/mol) |
|---|---|
|
H2O (g) |
-228.61 |
|
H2O (l) |
–237.2 |
|
CaSO4 • ½ H2O(s) |
–1435.2 |
|
CaSO4•2H2O(s) |
–1795.7 |
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Plaster of Paris, CaSO4 • ½ H2O(s), reacts
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CaSO4•2H2O(s).
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