Question

i would only like the second question answered.

Question 1 1 pts At 2600 K, boron carbide (B4C) decomposes as shown in the reaction below: BAC(s) 4 B(g)+ C(s) If B4C(s), C(s), and B(g) at a partial pressure of 5.5 x 104 atm are together in the container, calculate ΔG and determine if the process is spontaneous or nonspontaneous. Assume that B4C(s) and C(s) are in excess. ΔG-613 k, spontaneous. G 613 kJ; nonspontaneous. ΔG-126 kJ: spontaneous. O ΔG-126 kJ: nonspontaneous. Question 2 1 pts As mentioned before, SDS is a reagent that is added to the buffer of all SDS-PAGE experiments. Question #1: Use the items on the left to recreate the molecule by dragging and dropping them on the right side of the screen

Answer 1

1.

The equation for the decomposes (B,C) as follows, B,C(s) 4B(g)+E(s) The equilibrium constant expression for above expression as follow, K - (P Substitute the value of P in the above expression, K, -(55x10- atm) K, 9.150x10-4 The change in Gibbs free energy is calculated by using the expression as follows, Substitute the value of 8.314 J/mol K for R, 2600 K for T 9.150x10-4 for Kp and 775 kJ for ΔG° in the above expression, ΔG-775 kJ+ (8.314 J/mol . K) x (2600 K)In 9.150 x 10-14 ΔG 775 x 1000 J-648977-01 J 126022.99 J 131 1 kJ 126 k ΔG 126022.99 J × 1000 J

For the spontaneous reaction, the sign of AG m above reaction is positive. Therefore, the reaction will be non- spontaneous ust be negative. The sign of AG for Hence, the correct option is D