General Chemistry/Properties and Theories of Acids and Bases/Answers

1. a) hydrobromic acid b) sulfuric acid c) potassium hydroxide, base d) sulfurous acid e) phosphoric acid f) bromous acid g) sodium chloride, neutral salt 2. Substance: conjugate acid; conjugate base a) water (H2O): hydronium (H3O+); hydroxide (OH-) b) ammonia (NH3): ammonium (NH4+); amide (NH2-) c) bisulfate ion (HSO4-): sulfuric acid (H2SO4); sulfate ion (SO42-) d) zinc hydroxide (Zn(OH)2): Zn(OH)+; no conjugate base e) hydrobromic acid (HBr): no conjugate acid; Br- f) nitrite ion (NO2-): nitrous acid (HNO2); no conjugate base g) dihydrogen phosphate ion (H2PO4-): phosphoric acid (H3PO4); biphosphate ion (HPO42-) 3. a) A, E b) B, C c) A, B, C, E d) D e) No. Both acids and bases will conduct electricity. 4. Conjugate acids are underlined. Conjugate bases are in bold font. a) HCl + H2O → H3O + Cl- b) HClO + H2O → ClO- + H3O c) CH3CH2NH2 + H2O → CH3CH2NH3+ + OH- 5. a) strontium hydroxide: both b) butyllithium (C4H9Li): Brønsted-Lowry (reacts with protons to form C4H10 + Li) c) ammonia: Brønsted-Lowry d) potassium hydroxide: both e) potassium iodide: neither 6. No, pure water can still have a very minute amount of dissolved ions. H2O + H2O → H3O+ + OH-