o Typing Spanish Accents x v- Univ of South Missis x wwwwsaplingleaming.cor x CA

Question

o Typing Spanish Accents x v- Univ of South Missis x wwwwsaplingleaming.cor x CA Certain Reaction Has A x C www.sap nglea ning.com/ibiscms/m 3578767 /mod/ibis/view.php?id: My Assignment 5/5/2017 05:00 PM A 8/100 G 5/4/2017 10:15 AM Gradebook Attempts Score Print Calculator Periodic Table Question 16 of 29 Map Sapling Learning 98 At a certain temperature 0.960 mol of Sos is placed in a 4.50-L container. At equilibrium, 0.140 mol of O2 is present. Calculate Kc. 20 Number 95 97 Tools 23 25 95 26 27 95 28 90 Previous 2 check Answer Next Exi O 29 Resources Assignment Information Available From: 4/15/2017 08:00 AM 5/5/2017 05:00 PM Due Date: Points Possible Grade Category: Extra Credit Description: Policies Extra credit You can check your answers. You can view so tions after the due d You can keep trying to answer each question until you get it right or give up. You lose 5% of the points available to each answer in your question for each incorrect attempt at that o Textbook o Help with This Topic OWeb Help & Videos OTechnical Support and Bug Reports

Explanation / Answer

initial concentration of SO3 = number of mol of SO3 / cvolume

= 0.960 mol / 4.50 L

= 0.213 M

Equilibrium concentration of O2 = number of mol of O2 / cvolume

= 0.140 mol / 4.50 L

= 0.0311 M

2SO3(g)   <—> 2SO2 (g)   +   O2 (g)

0.213       0           0       (initial)

0.213-2x       2x           x       (at equilibrium)

Given at equilibrium,

[O2] = 0.0311 M

So,

x = 0.0311 M

Kc = [SO2]^2 [O2]/[SO3]^2

Kc = (2x)^2 * x / (0.213-2x)^2

Kc = (2*0.0311)^2 * (0.0311) / (0.213 - 2*0.0311)^2

Kc = 5.29*10^-3

Answer: 5.29*10^-3

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

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