Question

2Ca(s)+O2(g) → 2CaO(s) ΔH∘rxn= -1269.8 kJ; ΔS∘rxn= -364.6 J/K For this problem, assume that all reactants and products are in their standard states. You may want to reference (Pages 811 - 815) Section 18.6 while completing this problem.

<Chapter 18 Homework Exercise 18.46 - Enhanced - with Feedback 20 of 37 Review I Constants I Periodic Table 2Ca(s)02(g)2CaO(s) AH 1269.8 kJ; AS 364.6 J/K Part A For this problem, assume that all reactants and products are in their standard states. Calculate the free energy change for the reaction at 30 °C reference (Pages 811-815) Section You may want 18.6 while completing this problem Express your answer using four significant figures VAE 1164 AG kJ Previous Answers Request Answer Submit x Incorrect; Try Again Part B Is the reaction spontaneous? spontaneous nonspontaneous Previous Answers Submit

Answer 1

given Rx og caes) + 02 (9) 2cao(s) Hex = -1269 kJ osran = - 364-6JIK T = 30°c using this equation sgo - AHO - TOS 14rxn= - 1269 kJ so ran = - 364-6 JIK. I = 273 + 30 = 303K A = -1269 kJ - (303K) (-364.6JIK) (1 kJ DO - 1269 RJ – 110.UKJ ago = -1,158.6 kJ PART B Als is negative, the Rx is spontaneous 103)