Chemical EquilibriumSolubility Product21Choose the best answerFor a sparingly soluble salt, the solubility product (Ksp) is mainly used to predict:ARate of dissolutionBWhether precipitation will occurCHeat of solutionDColour of the salt Like 1 Discuss 0Share
Chemical EquilibriumLe Chatelier’s Principle22Choose the best answerLe Chatelier’s principle is applicable to:ABoth physical and chemical equilibriaBChemical equilibria onlyCPhysical equilibria onlyDNeither physical nor chemical equilibria Like 0 Discuss 0Share
Chemical EquilibriumMagnitude of Equilibrium Constant and Stability23Choose the best answerWhich nitrogen oxide is most stable against decomposition according to the following decomposition equilibrium constants?A2NO₂ ⇌ N₂ + 2O₂; K = 6.7 × 10⁻¹⁶B2NO ⇌ N₂ + O₂; K = 2.2 × 10⁻³⁰C2N₂O₅ ⇌ 2N₂ + 5O₂; K = 1.2 × 10⁻³⁴D2N₂O ⇌ 2N₂ + O₂; K = 3.5 × 10⁻³³ Like 0 Discuss 0Share
Chemical EquilibriumActive Mass and Dynamic Equilibrium24Choose the best answerWhich statement is false?AIncreasing reactant concentration generally decreases reaction rateBDynamic equilibrium occurs when forward and reverse rates are equalCDissociation of a weak electrolyte is reversibleDFree ions can participate readily in chemical reactions Like 0 Discuss 0Share
Chemical EquilibriumUnits of Kc25Choose the best answerFor A + B ⇌ C, the unit of Kc, using concentration units, is:Amol dm⁻³Bdm³ mol⁻¹Cmol dm³Ddm⁻³ mol Like 0 Discuss 0Share