Work sheet 4 General Chemistry, Assignments of Chemistry

Download Work sheet 4 General Chemistry and more Assignments Chemistry in PDF only on Docsity! Ch. 4 Worksheet 1. Identify each of the following substances as a strong electrolyte, weak electrolyte or nonelectrolyte: (a) H2O (b) KCl (c) HNO3 (d) CH3COOH (e) C12H22O11 2. Characterize the following compounds as soluble or insoluble in water: (a) CaCO3 (b) ZnSO4 (c) Hg(NO3)2 (d) HgSO4 (e) NH4ClO4 3. Write ionic and net ionic equations for the following reactions: a. Na2S (aq) + ZnCl2 (aq) b. 2K3PO4 (aq) + 3Sr(NO3)2 (aq) c. Mg(NO3)2 (aq) + 2NaOH (aq) 4. Balance the following equations and write the corresponding ionic and net ionic equations (if appropriate): a. HBr (aq) + NH3 (aq) b. Ba(OH)2 (aq) + H3PO4 (aq) c. HClO4 (aq) + Mg(OH)2 (s) 5. For the complete redox reactions given here, write the half-reactions and identify the oxidizing and reducing agents: a. 4Fe + 3O2 2Fe2O3 b. Cl2 + 2NaBr 2NaCl + Br2 c. Si + 2F2 SiF4 d. H2 + Cl2 2HCl 6. Give the oxidation numbers for the underlined atoms (in BOLD print) in the following molecules and ions: (a) IF7 (b) K2Cr2O7 (c) NaHCO3 (d) NaIO3 (e) KAuCl4 7. Classify the following redox reactions as combination, decomposition or displacement: a. 2H2O2 2H2O + O2 b. Mg + 2AgNO3 Mg(NO3)2 + 2Ag c. NH4NO2 N2 + 2H2O d. H2 + Br2 2HBr 8. Calculate the mass of KI in grams required to prepare 5.00 x 102 mL of a 2.80 M solution.