- 8 14 In The Reaction 2a Bc The Heat Of Reaction At 300k Is 10 000 Cal Gmol The Heat Capacities Of The Substances A 1 (82.74 KiB) Viewed 41 times
8.14 In the reaction 2A + BC the heat of reaction at 300K is -10,000 cal/gmol. The heat capacities of the substances A, B, and C, in cal/gmol K, are: . A 16.0 - (1.5 × 10/T) B 11.0 - (0.5 × 10³/T) C 25.0 www (1.0 × 10³/T) with T expressed in K. The heat capacity equations are valid in the range 300 K T ≤ 1000 K (a) Derive an equation for the heat of reaction as a function of temperature. (b) Calculate the temperature at which the reaction changes from exo- thermic to endothermic. Use Newton's method for the iterations. Calculate the heat of reaction at 500 K assuming that substance A undergoes a change of phase at 400 K with AHVL (400 K) = 928 cal/ gmol after which its heat capacity becomes a constant 10 cal/gmol. K. (c)