At 2600 K, ΔG° = 775 kJ for the vaporization of boron carbid…

At 2600 K, ΔG° = 775 kJ for the vaporization of boron carbide:                                                        B4C(s) ⇌ 4 B(g) + C(s)  Find ΔG and determine if the process is spontaneous if the reaction vessel contains 4.00 mol B4C(s), 0.400 mol of C(s), and B(g) at a partial pressure of 1.0 × 10-5 atm.