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ID: 988661 • Letter: W
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wDBajgWLx D Wiz Khalifa x Wiz Khalifa x WDBa/9WL x File Edit View History Bookmarks People Window Help D Loading or, K ll when the nxDLoadingomx N when the n × :Chegg.com x x x X Logged OuM / MaizChap x MQuiz Chap. C D ezto.mheducation.com/hm.tpx KQuestion 3 (of 5 3. 200 value: 2.00 points 1 out of 3 attempts Assistance Be sure to answer all parts. Check My Work View Hint View Show Me Guided Solution Print Question Help Report a Problem At 1000 K, a sample of pure NO2 gas decomposes: The equilibrium constant, Kp, is 158. Analysis shows that the partial pressure of O2 is 0.13 atm at equilibrium. Calculate the pressure of NO and NO in the mixture. Pressure of NO atm Pressure of NO,: atm wCBa/9WLn-90302Future- EVOL 12016)z Canceled 7W06dvRIYEP-ID1FOfB .rarExplanation / Answer
Let initial pressure of NO2 be P
2NO2 <----> 2NO + O2
P 0 0 (INITIAL)
P-2x 2x x (at equilibrium)
so,
p(O2) = x = 0.13 atm
p(NO)= 2x = 2*0.13 = 0.26 atm <---------------Answer
Kp = p(O2)* (p(NO))^2 / (p(NO2))^2
158 = 0.13 * 0.26^2 / (p(NO2))^2
(p(NO2))^2 = 5.56*10^-5
P(NO2) = 0.00746 atm <---------Answer
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