The reaction NO2 (g) NO (g) N2O (g) O2 (g) reachedequilibrium at ...

NO2 g NO g N2O g O2 g Initial 0056 0294 0184 0377 at equilibrium 0056 x 0294 x 0184x 037 ....

The reaction NO2 (g) + NO (g) â‡Œ N2O (g) + O2 (g) reached equilibrium at...

Free

80.2K

Verified Solution

Question

Chemistry

The reaction NO2 (g) + NO (g) â‡Œ N2O (g) + O2 (g) reachedequilibrium at a certain high temperature. Originally, the reactionvessel contained the following initial concentration: [NO2]i =0.0560 M, [NO]i = 0.294 M, [N2O] = 0.184 M, and [O2] = 0.377 M. Theconcentration of the NO2, the only colored gas in the mixture, wasmonitored by following the intensity of the color. At equilibrium,the NO2 concentration had become 0.118 M. What is the value of Kcfor this reaction at this temperature?

Answer & Explanation Solved by verified expert

3.6 Ratings (466 Votes)

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â NO2 (g) +Â Â Â NO (g)Â Â Â Â Â â‡ŒÂ Â Â Â Â N2O (g)Â Â +Â Â Â O2 (g)

InitialÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.056Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.294Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.184Â Â Â Â Â Â Â Â Â Â Â Â 0.377

at equilibriumÂ Â Â Â Â Â Â 0.056 +xÂ Â Â Â Â Â Â Â Â Â 0.294 +xÂ Â Â Â Â Â Â Â Â Â Â Â Â 0.184-xÂ Â Â Â Â Â Â Â 0.377-x

So,

equilibrium NO2 concentration = 0.056 +x

But given that equilibrium NO2 concentration = 0.118 M

Hence,

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.056 +x = 0.118

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â x = 0.062 M

Hence,

equilibrium concentrations are

[NO2] = 0.118 M

[NO] = 0.294 +x = 0.294 + 0.062 = 0.356 M

[N2O] = 0.184-x = 0.184 -0.062 = 0.122 M

[O2] = 0.377-x = 0.377-0.062 = 0.315 M

Therefore,

Â Â Â Â Kc = [ N2O] [O2]/ [NO2] [NO]

Â Â Â Â Â Â Â Â Â Â Â = 0.122 x 0.315 / 0.118 x 0.356

Â Â Â Â Â Â Â Â Â Â Â Â = 0.912

Therefore,

Â Â Â Kc = 0.912

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member