ne reacuon Mapo N,O, 2NO is allowed to reach equilibrium in a chloroform solutio

Question

ne reacuon Mapo N,O, 2NO is allowed to reach equilibrium in a chloroform solution at 25 °C. The equilibrium concentrations are 0.339 mol L- N204 and 1.95 mol L- NO2 a. Calculate the equilibrium constant, Kc, for this reaction Number b. An additional 1.00 mol of NO2 is added to 1.00 L of the solution and the system is allowed to reach equilibrium again at the same temperature. Select the direction of the equilibrium shift after the NO2 is added. O O O towards the reactant towards the product no change Scroll down. c. Determine how the addition of extra NO2 in part b will affect the rate constant, Kc O O Kc will increase Ke will decrease Kc will not change

Explanation / Answer

N2O4 <---------> 2NO2

Kc = [NO2]2 / [N2O4]

[NO2] = 1.95M

.[N2O4] = 0.339 M

Kc = [1.95]2 / [0.339]

Kc = 11.22

b) by adding 1 mol NO2 we are disturbing equilibrium. to reattain equilibrium some NO2 consumes to form N2O4

so reaction favours reactants.

answer = towards reactants

c) Kc effect only by temperature not by concentration

answer = Kc will not change.

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