Name: …………………………………………………….. Date: …………………………… Stoichiometry- Chemical Equations Part A: Write balanced chemical equation for following word equations 1. Sodium nitrate → sodium nitrite + oxygen gas -------------------------------------------------------------------------------------------------------------------------- 2. Zinc sulphide + oxygen → zinc oxide + sulphur dioxide -------------------------------------------------------------------------------------------------------------------------- 3. Lead (II) nitrate + potassium iodide → potassium nitrate + lead (II) iodide -------------------------------------------------------------------------------------------------------------------------- 4. Calcium phosphate + sulphuric acid → calcium sulphate + Phosphoric acid -------------------------------------------------------------------------------------------------------------------------- 5. Ammonium chloride + calcium hydroxide → calcium chloride + ammonia + water -------------------------------------------------------------------------------------------------------------------------- 6. Carbon monoxide + iron (III) oxide → iron + carbon dioxide -------------------------------------------------------------------------------------------------------------------------- 7. Ammonia + oxygen → nitrogen monoxide + water -------------------------------------------------------------------------------------------------------------------------- 8. Thermal decomposition of copper carbonate gives copper oxide and carbon dioxide gas -------------------------------------------------------------------------------------------------------------------------- 9. Nitrogen + hydrogen → ammonia -------------------------------------------------------------------------------------------------------------------------- 10. Propane (C3H8) + oxygen → carbon dioxide +water -------------------------------------------------------------------------------------------------------------------------- 2 Part B: Write net ionic equation with state symbols for following descriptions 11. When aqueous silver nitrate and aqueous potassium bromide are mixed, silver bromide precipitate is formed -------------------------------------------------------------------------------------------------------------------------12. Barium sulphate precipitate is formed when aqueous barium nitrate and aqueous sodium sulphate solutions are mixed -------------------------------------------------------------------------------------------------------------------------13. Zinc metal displaces copper from aqueous copper sulphate solution -------------------------------------------------------------------------------------------------------------------------14. When a solution of calcium chloride reacts with a solution of sodium hydroxide, calcium hydroxide precipitate is formed in a solution of sodium chloride. -------------------------------------------------------------------------------------------------------------------------15. When dissolved sodium hydroxide reacts with sulfuric acid, aqueous sodium sulphate and water are formed. -------------------------------------------------------------------------------------------------------------------------Part C: Balance the following chemical equations 16. _____ Al + _____ NaOH + ____H2O → _____NaAl(OH)4 + _____H2 17. _____ KMnO4 + _____ HCl → ____KCl + _____ MnCl2 + _____ H2O + _____ Cl2 18. _____ P + _____ O2 → __________P2O5 19. _____ Al(OH)3 + _______H2SO4 → _______Al2(SO4)3 + _______H2O 20. ______ Zn(OH)2 + _______ NaOH → _________ Na2ZnO2 + ______ H2O 21. ______ XeF6 + _____ H2O → ______ XeOF4 + _____ HF 22. ______ GaBr3 + ______ Cl2 → _______GaCl3 +_______ Br2 23. ____AgNO3 → ______Ag + ______NO2 + _____O2 24. _____ C4H10 + _____O2 → _______ CO2 + _____ H2O 25. ____ FeCl2 + ____ KNO3 + _____HCl → _____FeCl3 + ____ NO + ____ H2O + ____ KCl Worksheet-Stoichiometry-Chemical equations