1. Chemical Reactions A MiniPractice For Miriam

2. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation and Give TYPE of Reaction. 1. When solid sodium nitrate is heated, it decomposes to give solid sodium nitrite and oxygen gas. Equation: 2NaNO 3  2NaNO 2 + O 2 Net Ionic Equation: 2NaNO 3  2NaNO 2 + O 2 Decomposition

3. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 2. An aqueous solution of ammonium chloride and barium hydroxide is heated, and the compounds react to give off ammonia gas. Barium chloride solution and water are also products. Equation: 2NH 4 Cl + Ba(OH) 2  2NH 3 + 2H 2 O + BaCl 2 Net Ionic Equation: NH 4 + + OH -  NH 3 + H 2 O Double Replacement

4. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 3. When solid calcium phosphate and aqueous sulfuric acid solution react aqueous phosphoric acid and solid calcium sulfate are produced. Equation: Ca 3 (PO 4 ) 2 + 3H 2 SO 4  3CaSO 4 + 2H 3 PO 4 Net Ionic Equation: Equation: Ca 3 (PO 4 ) 2 +6H + + 3SO 4 2-  3CaSO 4 + 2H 3 PO 4 Double Replacement

5. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 4. Gaseous ammonia reacts with oxygen gas to yield nitrogen gas and water. Equation: 4NH 3 + 3O 2  2N 2 + 6H 2 O Net Ionic Equation: Equation: 4NH 3 + 3O 2  2N 2 + 6H 2 O Single Replacement

6. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 5. Solid sodium reacts with water produces aqueous sodium hydroxide and hydrogen Equation: 2Na + 2H 2 O  2NaOH + H 2 Net Ionic Equation: Equation: 2Na + 2H 2 O  2Na + + 2OH - + H 2 Single Replacement

7. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 5. Aqueous silver nitrate reacts with hydrochloric acid Equation: AgNO 3 + HCl  AgCl + HNO 3 Net Ionic Equation: Equation: Ag + + Cl -  AgCl Double Replacement Precipitation

8. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 6. Solid Lead reacts with Zinc chloride Equation: Pb + ZnCl 2  No Reaction Net Ionic Equation: None Single Repacement

9. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 7. The Octane ( C 8 H 18 ) in gasoline burns in the presence of oxygen Equation: 2C 8 H 18 + 25O 2  16CO 2 + 18H 2 O Net Ionic Equation: Equation: 2C 8 H 18 + 21O 2  16CO 2 + 36H 2 O Combustion

10. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 8. Solid sodium iodate decomposes upon heating Equation: 2NaIO 3  2NaI + 3O 2 Net Ionic Equation: Equation: 2NaIO 3  2NaI + 3O 2 Decomposition

11. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 9. Pellets of Copper(II) oxide are boiled in an aqueous solution of sulfuric acid Equation: CuO + H 2 SO 4  CuSO 4 + H 2 O Net Ionic Equation: Equation: CuO + 2H +  Cu 2+ + H 2 O Double Replacement

12. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 10. Aluminum foil is rolled in a ball and placed in a beaker of aqueous copper(II) carbonate Equation: 2Al + 3CuCO 3  Al 2 (CO 3 ) 3 + 3Cu Net Ionic Equation: Equation: 2Al + 3Cu +2 + 3CO 3 2-  Al 2 (CO 3 ) 3 + 3Cu Single Replacement

13. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 11. Solid calcium is heated in an atmosphere of oxygen gas Equation: 2Ca + O 2  2CaO Net Ionic Equation: Equation: 2Ca + O 2  2CaO Synthesis

14. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 12. A solution of nickel(II) bromide is added to a solution of potassium hydroxide Equation: NiBr 2 + 2KOH  2KBr + Ni(OH) 2 Net Ionic Equation: Equation: Ni 2+ + 2OH -  Ni(OH) 2 Double Replacement Precipitation

15. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 13. A strip of lead metal is added to a solution of silver nitrate. Equation: Pb + 2 AgNO 3  Pb(NO 3 ) 2 + 2Ag Net Ionic Equation: Equation: Pb + 2Ag +  Pb 2+ + 2Ag Single Replacement

16. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 14. Hydrogen iodide gas is bubbled into a solution of lithium carbonate. Equation: 2HI + Li 2 CO 3  2 LiI + H 2 O + CO 2 Net Ionic Equation: Equation: 2HI + CO 3 2-  H 2 O + CO 2 + I - Double Replacement

17. Write out and balance the correct chemical equations for the following reactions. Then write a net ionic equation. 15. A solution of sodium phosphate is added to a solution of aluminum nitrate. Equation: Na 3 PO 4 + Al(NO 3 ) 3  AlPO 4 + 3NaNO 3 Net Ionic Equation: Equation: Al 3+ + PO 4 3-  AlPO 4 Double Replacement