Exercise 14.98 Part A When N2 Os (g) is heated it dissociates into N2 03 (g) and

Question

Exercise 14.98 Part A When N2 Os (g) is heated it dissociates into N2 03 (g) and O2 (g) according to the following reaction: N20s (gN203(gO2(g) K7.75 at a givern temperature. The N203 (g) dissociates to give N2O(g) and 02 (9) according the following reaction: N20(g)N20(g)+02(9) K 4.00 at the same temperature. When 4.00 mol of N2O5 (g) is heated in a 1.00-L reaction vessel to this temperature, the concentration of O2 (g) at equilibrium is 4.50 mol/L Find the concentration of NO, in the equilibrium system. Express your answer using two decimal places. Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining Part B Find the concentration of N2 O in the equilibrium system. Express your answer using two decimal places. Submit My Answers Give Up Part C Find the concentration of N2 Os in the equilibrium system. Express your answer using two decimal places.

Explanation / Answer

1. [n2o3] = [o2] = 4.5 mol/L

Kc = 7.75 = [N2O3][O2]/[N2O5]

   7.75 = (4.5^2)/X

X = 2.613 M

2.

kc = [N2O][O2]/[N2O3]

4 = X^2/(4.5-X)

X = 2.69 M

[N2O] = 2.69 M

[N2O3] = 4-2.69

   = 1.31 M

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