Chemical BondingVSEPR Theory and Molecular Geometry1781Choose the best answerA regular molecular geometry is most likely when the central atom is surrounded by:ALone pairs onlyBBoth lone pairs and bond pairsCBond pairs onlyDTwo lone pairs only Like 0 Discuss 0Share
Chemical EquilibriumSolubility Product Ksp1782Choose the best answerThe correct solubility-product expression for SnS₂ is:AKsp = [Sn⁴⁺][S²⁻]²BKsp = [Sn²⁺][S²⁻]²CKsp = [Sn²⁺][2S²⁻]DKsp = [Sn⁴⁺][2S²⁻]² Like 0 Discuss 0Share
LiquidsHydrogen Bonding1783Choose the best answerWhich acid does NOT exhibit significant conventional hydrogen bonding between its molecules?AHNO₃BHFCHClDH₂SO₄ Like 0 Discuss 0Share
Chemical BondingBond Polarity1784Choose the best answerThe increasing order of bond polarity is:AC–F < C–Cl < C–Br < C–IBC–I < C–Br < C–Cl < C–FCC–Br < C–I < C–Cl < C–FDC–I < C–Br < C–F < C–Cl Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Buffer Action#Chemical Equilibrium1785Choose the best answerWhen H⁺ is added to an NH₄OH/NH₄Cl buffer, what mainly happens? (UHS MDCAT 2025)AH⁺ reacts with NH₄OH to form NH₄⁺ and H₂OBThe buffer stops working immediatelyCNH₄Cl completely dissociates into NH₃DH⁺ remains unchanged Like 0 Discuss 0Share