The reaction I 2 (g) ß à 2I(g) was studiedby sealing solid iodine, I 2 , in a gl

Question

The reaction I2(g) ß à 2I(g) was studiedby sealing solid iodine, I2, in a glass bulb andmeasuring the total equilibrium pressure in the bulb at varioustemperatures (the I2 completely sublimes). Thefollowing data was obtained:

Volume of bulb= 249.8 ml; original mass of I2= 497mg;

At T = 800 oC the total pressure was 0.738 atm

At T = 1000 oC the total pressure was 0.984 atm

a) Show that the equilibrium pressure of I2(g) is2Po – Pt and that of I(g) is2(Pt - Po­), where Po is theoriginal pressure of I2(g) (at the particulartemperature in question, when no decomposition occurs) andPt is the total pressure in the bulb atequilibrium. Assume ideal gas behaviour throughout.

b) Calculate Kp for each temperature.

c) Calculate DHo in kJ mole-1 for thereaction in the temperature range 800 oC to1000 oC (assume DHo is independent oftemperature).

Explanation / Answer

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

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