Iron(II) chloride (melting point 677 °C) and potassium chloride (melting point 776 °C) form the compounds KFeCl3 and K2FeCl4 at elevated temperatures. KFeCl3 melts congruently at 399 °C and K2FeCl4 melts incongruently at 380 °C. Eutectics are formed with compositions x = 0.38 (melting point 351 °C) and x = 0.54 (melting point 393 °C), where x is the mole fraction of FeCl2. The KCl solubility curve intersects the A curve at x = 0.34. Sketch the phase diagram. State the phases that are in equilibrium when a mixture of composition x = 0.36 is cooled from 400 °C to 300 °C.
Iron(II) chloride (melting point 677 °C) and potassium chloride (melting point 776 °C) form the compounds KFeCl3 and K2FeCl4 at elevated temperatures. KFeCl3 melts congruently at 399 °C and K2FeCl4 melts incongruently at 380 °C. Eutectics are formed with compositions x = 0.38 (melting point 351 °C) and x = 0.54 (melting point 393 °C), where x is the mole fraction of FeCl2. The KCl solubility curve intersects the A curve at x = 0.34. Sketch the phase diagram. State the phases that are in equilibrium when a mixture of composition x = 0.36 is cooled from 400 °C to 300 °C.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Iron(II) chloride (melting point 677 °C) and potassium chloride (melting point 776 °C) form the compounds KFeCl3 and K2FeCl4 at elevated temperatures. KFeCl3 melts congruently at 399 °C and K2FeCl4 melts incongruently at 380 °C. Eutectics are formed with compositions x = 0.38 (melting point 351 °C) and x = 0.54 (melting point 393 °C), where x is the mole fraction of FeCl2. The KCl solubility curve intersects the A curve at x = 0.34. Sketch the phase diagram. State the phases that are in equilibrium when a mixture of composition x = 0.36 is cooled from 400 °C to 300 °C.
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