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Using the tabulated data below, calculate the standard reaction Gibbs energy the

ID: 995871 • Letter: U

Question

Using the tabulated data below, calculate the standard reaction Gibbs energy the equilibrium constant K for the following reaction: 2 NO_2(g) N_2O_4 (g) at 298 K. You need to demonstrate your answer by plotting a graph that shows the equation of the line. Please provide an excel sheet to obtain the answer. This is typically how your experimental data is treated. From the data tables of the text Resource section, calculate the standard Gibbs energy the equilibrium constant at 298 K for N_2O_4 2 NO_2. Is this reaction favorable? Justify your answer. Molecular bromine is 24 percent dissociated at 298 K and 1.00 bar in the equilibrium Br_2(g) Br(g). Calculate the mole fraction of each gas at equilibrium.

Explanation / Answer

2)

rG < 0; Forward reaction is spontaneous, reaction exergonic (work-producing)

rG = 0; Reaction at equilibrium

rG > 0; Reverse reaction is spontaneous, reaction endergonic i.e. required work to go in forward reaction.

3)

Br2 (g)      2Br (g)

(100-24)%     24%

Mole fraction of Br = 24/24+76 = 0.24

Mole fraction of Br2 = 76/76+24 = 0.76