Consider the following data on some weak acids and weak bases: acid base Ka K₁₂ name formula name formula hydrofluoric acid HF 8 × 10 4 ethylamine C2H5NH2 6.4 × 101 hypochlorous acid HClO 3.0 × 10 ammonia NH3 1.8 × 10-5 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution 0.1 M NaCIO PH choose onev 0.1 M NH4Cl choose onev 0.1 M C2H5NH3Br choose one 0.1 M KF choose one Х

Hydrogen selenide (H2Se) reacts with water according to the following equation. H2Se + H2O → SeH– + H3O+ Can you identify the acid, base, conjugate acid, and conjugate base in this reaction? Use patterns in the periodic table to explain why the substances you identified acted as the acid and the base in this reaction.

Consider the following data on some weak acids and weak bases: base acid Κα a Ко name formula name formula hydrofluoric acid 4 HF 6.8 × 10 pyridine CH&N 1.7x10 acetic acid HCH3CO2 1.8 × 10¯¯ methylamine CH3NH2 4.4 × 10¯ -4 Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. 0.1 M KCI solution PH ✓ choose one 1 (lowest) 0.1 M CH3NH3Br 0.1 M C5H5NHCI 0.1 M NaF 2 3 4 (highest) choose one v Х

Consider the following data on some weak acids and weak bases: name nitrous acid acid hypochlorous acid HCIO 0.1 M NaNO₂ 0.1 M KBr solution 0.1 M KCIO 0.1 M HONH3Cl K a formula HNO₂ 4.5 × 10 3.0 × 10 8 pH choose one ✓ Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. choose one ✓ choose one ✓ base ✓ choose one 1 (lowest) 2 3 4 (highest) formula hydroxylamine HONH₂ methylamine CH3NH₂ name Kh 1.1 × 10 4.4 × 10 -8 4 18 Ar