The shells of marine organisms contain calcium carbonate CaCO3, largely in a crystalline form known as calcite. There is

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The Shells Of Marine Organisms Contain Calcium Carbonate Caco3 Largely In A Crystalline Form Known As Calcite There Is 1 (47.63 KiB) Viewed 16 times

B. Based on your answer in Part A, is aragonite or calcitemore stable at T=298K and P=1.00 bar.
C. CaCO3 has a formula weight of 100g/mole.Using this fact and the density data in the table above, calculatethe volume change that occurs in converting one mole of calcite toone mole of aragonite. (SI units)
D. Using your results from parts A and C, calculate thepressure increase ΔP required to bring calcite and aragonite intoequilibrium at T=298K. (SI units)
E. Using your result from Part A and the entropy values inthe table above, calculate the Gibbs energy change when one mole ofcalcite is converted to one mole of aragonite at T=400K. Assume theentropy difference between calcite and aragonite is constantbetween T=298K and T=400K.
F. Based on your answer in Part D, can calcite be converted toaragonite at T=298K by increasing the pressure?
The shells of marine organisms contain calcium carbonate CaCO3, largely in a crystalline form known as calcite. There is a second crystalline form of calcium carbonate known as aragonite. Physical and thermodynamic properties of calcite and aragonite are given below. Calcite Aragonite AH₁ (kJ/mol) -1206.87 -1207.04 AGf (kJ/mol) -1128.79 -1127.71 S°(J/K*mol) 92.88 88.70 Cp (J/K*mol) 81.88 81.25 density (g/mL) 2.710 2.930