Chemical EquilibriumEffect of Catalyst on Equilibrium661Choose the best answerA catalyst increases the rate of a reversible reaction because it:AProvides an alternative pathway with lower activation energyBIncreases molecular kinetic energyCShifts equilibrium permanently toward productsDSlows the backward reaction Like 0 Discuss 0Share
Chemical EquilibriumEquilibrium Constant Expression662Choose the best answerFor A + 2B ⇌ C, the equilibrium-constant expression is:AKc = [C]/([A][B]²)BKc = [C]/([A][B])CKc = [A][B]²/[C]DKc = 2[A][B]/[C] Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryIUPAC Nomenclature of Unsaturated Alcohols663Choose the best answerWhich of the following is a correctly written IUPAC name?AProp-3-yn-1-olBBut-4-ol-4-yneCBut-3-ol-2-yneDBut-3-yn-1-ol Like 0 Discuss 0Share
Chemical BondingMolecular Formula and Bonding Arrangement664Choose the best answerWhich arrangement does NOT correspond to an AB₄-type species?AA Group 14 central atom forming four single bondsBA Group 15 central atom forming three ordinary bonds and one coordinate bondCA Group 16 central atom bonded to four surrounding atomsDA Group 16 central atom forming three double bonds with three surrounding atoms Like 0 Discuss 0Share
ElectrochemistryRedox Reactions665Choose the best answerWhich is a complete redox reaction?ANaCl + AgNO₃ → NaNO₃ + AgClB2Na + Cl₂ → 2NaClC2Cl⁻ → Cl₂ + 2e⁻DNa⁺ + e⁻ → Na Like 0 Discuss 0Share