Calculate the pressure and temperature of the triple point in the andalusite-sillimanite-kyanite phase diagram. You can do this using the data in Appendix B:

i. graphically, by finding the location of at least two boundaries at at least two different pressures;

ii. by obtaining an equation for at least two of the boundaries in the form

y = mx + b, and solving for P and T .

Plot all three reactions in P vs T space, showing the stable phase boundaries and their metastable extensions.

please can someone with an idea how to attempt it please answer this. thanks. All the information is there.

308 APPENDIX B. STANDARD STATE PROPERTIES Formula Form Mol. wt. AgH AG kJ mol- S Jmol-'K- g mol-1 ? cm mol-1 Aluminum AI Al -45.3 45.60 25.575 39.07 35.52 63.912 26.98150 0 28.33 24.35 aq 26.9815 -531. -485 -321.7 Al(OH)2+ aq - 767.0 -693.7 Al(OH); aq -1010.7 -901.4 Al(OH)3(aq) aq -1250.4 -1100,7 Al(OH) aq 95.0111 - 1490.0 --1307.0 102.9 Al2O3 &, corundum 101.9612 -1675.7 -1582.3 50.92 79.04 Al2O3 H20 boehmite 119.9766-1980.7 -1831.7 96.86 131.25 Al2O3 H20 diaspore 119.9766-1998.91 -1841.78 70.67 106.19 Al2O3.3H20 gibbsite 156.0074-2586.67 -2310.21 136.90 183.47 Al2O3 . 3H20 bayerite 156.0074 -2576.5 Al(OH)3 amorphous 78.0037 - 1276. Al2SiOS andalusite 162.0460 -2590.27 -2442.66 93.22 122.72 Al2SiOs kyanite 162.0460 -2594.29-2443.88 83.81 121.71 Al Sios sillimanite 162.0460 -2587.76 -2440.99 96.11 124.52 Al Si207.2H20 kaolinite 258.1616 -4119.6 -3799.7 205.0 246.14 Al2S1207.2H20 halloysite 258.1616 -41012 -3780.5 203.3 246.27 Al Siz07.2H2O dickite 258.1616 -4118.3 -3795.9 197.1 239.49 AleSi2013 mullite 426.0532 -6816.2 -6432.7 255. 326.10 Al2S14010(OH)2 pyrophyllite 360.3158 -5642.04 -5268.14 239.41 294.34 51.53 44.09 49.90 99.52 99.30 99.30 126.6