Chemical equilibrium 01Chemical equilibrium #Kc21Choose 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 #Kc22Choose 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
Chemical equilibrium 01Chemical equilibrium #Dynamic Equilibrium23Choose the best answerOn a concentration–time graph, what does a horizontal part of both curves indicate?AThe reaction has stoppedBEquilibrium has been establishedCReactants are completely consumedDProducts are no longer formed Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Reaction Quotient24Choose the best answerFor H₂(g) + I₂(g) ⇌ 2HI(g), if [H₂] = 0.2 mol L⁻¹, [I₂] = 0.2 mol L⁻¹, and [HI] = 0.6 mol L⁻¹, what is Qc?A0.44B3C9D48 Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Reaction Progress25Choose the best answerFor H₂(g) + I₂(g) ⇌ 2HI(g), why does the concentration of HI initially increase?AThe reverse reaction is initially fasterBThe forward reaction produces HICH₂ and I₂ are formed from HIDHI is initially present in excess Like 0 Discuss 0Share