UNIT 3: HOMEWORK For Practice 14.10 with feedback Part A Consider the following
ID: 1029310 • Letter: U
Question
UNIT 3: HOMEWORK For Practice 14.10 with feedback Part A Consider the following reaction: Find the equilibrium concentration of N20 Express the concentration to four decimal places and include the approp N204(g) 2NO2(g), Ke 0.36 at 2000°C The reaction mixture initially contains only the reactant N204]-0.0270M, and no NO2 You may want to reference (Pages 579-587) Section 14.8 while completing this problem. [N041-1 Value ll Units Submit Part B Find the equilibrium concentration of NO2 Express the concentration to four decimal places and include the approp 0 Type here to search oe0 @Explanation / Answer
N2O4(g) --------------------> 2NO2(g)
I 0.027 0
C -x 2x
E 0.027-x 2x
Kc = [NO2]^2/[N2O4]
0.36 = (2x)^2/(0.027-x)
0.36*(0.027-x) = 4x^2
x = 0.0217
[N2O4] = 0.027-x = 0.027-0.0217 = 0.0053M
The concen tration of N2O4 at equilibrium = 0.0053M
[NO2] = 2x = 2*0.0217 = 0.0434M
The concentration of NO2 at equilibrium = 0.0434M
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