Use data in Appendix C to calculate delta H degree , delta S degree , and delta G degree at 25 degree C for each of the following reactions. In each case show that delta G degree= delta H degree - T delta S degree. (a) 2Cr(s)+3O2(g) right arrow 2 CrO3(s) (b) BaCO3(s) right arrow BaO(s)+CO2(g) (c) 2 P(s)+10 HF(g) rifgt arrow 2 PF5 (g)+5 H2 9g) (d) K (s)+O2(g) right arrow KO2(s)