Which statement is true for this reaction at equilibrium? N_2(g) + 3H_2(g) lefta

Question

Which statement is true for this reaction at equilibrium? N_2(g) + 3H_2(g) leftarrow rightarrow 2NH_3(g) The rate of the forward reaction is greater than the rate of the reverse reaction. The rate of the forward reaction equals the rate of the reverse reaction. Neither the forward nor reverse reaction proceeds at equilibrium. The concentrations of the reactants and products are equal. For a reaction at equilibrium at a particular pressure and temperature, which is true? Delta G 0 Delta G = 0 Delta G^degree = 0 Use the information In the chart below to approximate the boiling point of bromine. 31 degree C 40. degree C 127K 333K The value of Delta G degree for an oxidation-reduction reaction is -618 kJ. Which describes E degree and K_eq for the reaction? Which process is an oxidation? CrO_4^-2 rightarrow Cr_2O_7^-2 CrO_3^-1 rightarrow ClO_2 2 Br^-1 rightarrow Br^2 MnO_4^-1 rightarrow MnO_2 Consider these reductions Cd^+2 + 2e^- rightarrow Cd E degree = -0.40V Al^+3 + 3e^- rightarrow Al E degree = -1.66V Mg^+2 + 2e^- rightarrow Mg E degree = -2.37V Which reaction occurs spontaneously at standard conditions? 3 Mg^+2 + 2AI rightarrow 3Mg + 2AI^+3 Mg^+2 + Cd rightarrow Mg + Cd^+2 2Al^+2 + 3Cd rightarrow 2Al + 3Cd^+2 Cd^+2 + Mg rightarrow Cd + Mg^+2 What is the ground-state electron configuration for Cr^3+(Z = 24)? [Ar]4s^2 3d^7 [Ar] 4s^2 3d^1 [Ar] 3d^3 [Ar] 4s^1 3d^2

Explanation / Answer

14)

Since reaction is at equilibrium, the rate of forward reaction will be equal to the rate of backward reaction

Answer: B

15)

At equilibrium,

Go = -R*T*ln Kc

and

G = 0

Hence,

Answer: c

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