Use the data at the back of this book to calculate the
Chapter 5, Problem 37P(choose chapter or problem)
Problem 37P
Use the data at the back of this book to calculate the slope of the calcite-aragonite phase boundary (at 298 K). You located one point on this phase boundary in below Problem; use this information to sketch the phase diagram of calcium carbonate.
Problem:
Calcium carbonate, CaCO3, has two common crystalline forms, calcite and aragonite. Thermodynamic data for these phases can be found at the back of this book.
(a) Which is stable at earth’s surface, calcite or aragonite?
(b) Calculate the pressure (still at room temperature) at which the other phase should become stable.
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