In each he fills a reaction vessel with some mixture of the reactants and produc

Question

In each he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 69.0 degree C and constant total pressure. Then, he measures the reaction enthalpy second reaction. Delta H and reaction entropy delta S of the first reaction, and the reaction enthalpy delta H and reaction free energy delta G of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate delta G for the first reaction and delta S for the second. (Make sure any numbers you enter have the correct number of significant digits.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium.

Explanation / Answer

1)

H = -852.0KJ

S = -2490 J/K= -2.49 KJ/K

T = 69.0 oC =(69.0+ 273) K = 342.0 K

use:

G = H - T*S

G = -852.0 - 342.0 * -2.49

G = -0.420 KJ

Answer: -0.420 KJ

since G is negative, this reaction is spontaneous

Answer: this reaction

2)

G = -16.0KJ

H = -181.0KJ

T = 69.0 oC =(69.0+ 273) K = 342.0 K

use:

G = H - T*S

-16.0 = -181.0 - 342.0 * S

S = -0.48 KJ/mol.K

S = -482 J/mol.K

Answer: -482 J/K

since G is negative, this reaction is spontaneous

Answer: this reaction

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.