Chemical equilibrium 01Chemical equilibrium #Kc21Choose the best answerA reaction with a very small Kc mainly contains:APredominantly products at equilibriumBPredominantly reactants at equilibriumCEqual concentrations of reactants and productsDComplete conversion to products Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc22Choose the best answerFor Fe³⁺(aq) + 4Cl⁻(aq) ⇌ FeCl₄⁻(aq), which expression represents Kc?A[Fe³⁺][Cl⁻]⁴ / [FeCl₄⁻]B[FeCl₄⁻] / [Fe³⁺][Cl⁻]⁴C[FeCl₄⁻] / [Fe³⁺][Cl⁻]D[FeCl₄⁻]⁴ / [Fe³⁺][Cl⁻] Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc23Choose the best answerFor a reversible reaction, what happens when Qc < Kc?AShift in the forward directionBShift in the reverse directionCRemain unchangedDStop both reactions Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc24Choose the best answerHow does Qc differ from Kc?AQc uses equilibrium concentrations, whereas Kc uses initial concentrationsBQc uses concentrations at a given instant, whereas Kc uses equilibrium concentrationsCQc and Kc are always numerically equalDKc changes with concentration, whereas Qc remains constant Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc25Choose the best answerFor N₂(g) + 3H₂(g) ⇌ 2NH₃(g), which change alters Kc?AIncreasing [N₂]BDecreasing [H₂]CAdding a catalystDIncreasing temperature Like 1 Discuss 0Share