Chemical equilibrium 01Chemical equilibrium #Reaction Progress116Choose 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
Chemical EquilibriumCommon-Ion Effect and H₂S Equilibrium117Choose the best answerFor H₂S ⇌ 2H⁺ + S²⁻, addition of NH₄OH causes the concentration of S²⁻ to:ADecreaseBRemain unchangedCIncreaseDBecome zero Like 1 Discuss 0Share
Chemical EquilibriumDynamic Equilibrium118Choose the best answerA chemical reaction is at equilibrium when:AAll reactants have been converted into productsBForward and backward reaction rates are equalCProduct formation has completely stoppedDReactant and product concentrations are equal Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Chemical Equilibrium#Equilibrium Constant119Choose the best answerQ.69 In exothermic reaction, by decreasing the temperature, equilibrium constant:ASameBSometimes decreases sometimes increasesCReaction moves backwardDIncreases Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc120Choose 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