Chemical equilibrium 01Chemical equilibrium #Kc16Choose the best answerIf Kc > 1, what is generally true about the equilibrium mixture?AMore reactants than productsBMore products than reactantsCEqual amounts of reactants and productsDNo reactants Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc17Choose the best answerFor the equilibrium CO₂(g) + H₂(g) ⇌ CO(g) + H₂O(l), what is the unit of Kc?Amol·dm⁻³Bmol⁻¹·dm³Cmol⁰·dm⁰ (no unit)Dmol²·dm⁻⁶ Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc18Choose the best answerA very large value of Kc shows that, at equilibrium, the reaction is:APredominantly reverseBVirtually complete in the forward directionCAt equilibrium with equal reactant and product concentrationsDUnable to proceed Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc19Choose the best answerThe graph shows forward rate (Rf) and reverse rate (Rr) versus time for a reversible reaction. Which statement is correct?ABefore tₑ, Qc = KcBAt tₑ, Qc < KcCAfter tₑ, Qc = Kc and the system is at equilibriumDAfter tₑ, forward rate is greater than reverse rate Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc20Choose 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