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Balancing Chemical Equations

Balancing Chemical Equations. +2. -1. 1. calcium + hydrochloric acid (HCl) a calcium chloride and hydrogen (gas). Ca + HCl a CaCl 2 + H 2. Formula equation. Balanced chemical equation. Ca + 2 HCl a CaCl 2 + H 2. Single Replacement.

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Balancing Chemical Equations

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  1. Balancing Chemical Equations

  2. +2 -1 1. calcium + hydrochloric acid (HCl) a calcium chloride and hydrogen (gas) Ca + HCl a CaCl2 + H2 Formula equation Balanced chemical equation Ca + 2 HCl a CaCl2 + H2 Single Replacement

  3. +2 -1 +2 -1 2. magnesium fluoride + lead(II) nitrate a magnesium nitrate + lead(II)fluoride +2 -1 +2 -1 MgF2 + Pb(NO3)2 a MgNO3 + PbF Mg(NO3)2 + PbF2 MgF2 + Pb(NO3)2a Mg(NO3)2 + PbF2 Double Replacement

  4. 3. aluminum oxide + water a aluminum hydroxide +3 -2 Al O + H2Oa

  5. 3. aluminum oxide + water a aluminum hydroxide +3 -1 Al2O3 + H2Oa Al OH Formula equation Al2O3 + H2Oa Al(OH)3 Balanced chemical equation Al2O3 + 3 H2Oa 2Al(OH)3 Synthesis

  6. 4. Ba(OH)2 + HBr a BaBr2 + HOH Formula equation 4. Ba(OH)2 + 2 HBr a BaBr2 + 2 HOH Balanced chemical equation Double Replacement

  7. 5. chlorine + magnesium iodide a magnesium chloride + iodine Cl2 + MgI2a MgCl2 + I2 Single Replacement

  8. 6. nickel(III)phosphate + potassium sulfate a nickel(III)sulfate + potassium phosphate Ni+3PO4-3 + K+1SO4-2a

  9. 6. nickel(III)phosphate + potassium sulfate a nickel(III)sulfate + potassium phosphate NiPO4 + K2SO4a Ni+3SO4-2 + K+1PO4-3 NiPO4 + K2SO4a Ni2(SO4)3 + K3PO4 Formula equation 2 NiPO4 + 3 K2SO4a Ni2(SO4)3 + 2 K3PO4 Balanced chemical equation Double Replacement

  10. +2 -2 7. sodium + zinc oxide a sodium oxide + zinc +1 -2 Na + ZnO a Na O + Zn Na + ZnO a Na2O + Zn Formula equation 2 Na + ZnO a Na2O + Zn Balanced chemical equation Single Replacement

  11. 8. strontium sulfite a sulfur dioxide + strontium oxide Sr+2SO3-2a SO2 + Sr+2O-2 SrSO3a SO2 + SrO Balanced chemical equation Decomposition

  12. +1 -1 +1 -2 9. potassium hydroxide a potassium oxide + water KOHa K2O + H2O Formula equation 2 KOHa K2O + H2O Balanced chemical equation Decomposition

  13. 10. ammonia + oxygen a nitrogen dioxide + water NH3 + O2a NO2 + H2O 4 NH3 + 7 O2a4 NO2 + 6 H2O

  14. +3 -2 11. Al + O2a aluminum oxide Al + O2a Al2O3 Formula equation 4 Al + 3 O2a 2 Al2O3 Balanced chemical equation Synthesis

  15. 12. Fe(OH)2a Decomposition of hydroxides produce water Fe(OH)2a FeO + H2O Balanced chemical equation Decomposition

  16. 13. Ba + Ni(OH)3a Ba+2OH-1 + Ni Ba + Ni(OH)3a Ba(OH)2 + Ni Formula equation 3 Ba + 2 Ni(OH)3a 3 Ba(OH)2 + 2 Ni Balanced chemical equation Single Replacement

  17. 14. sodium carbonate a Decomposition of carbonates produce CO2 Na2CO3a Na2O + CO2 Balanced chemical equation Decomposition

  18. Double replacement 15. KOH + H2SO4a K+1SO4-2 + H+1OH-1 KOH + H2SO4a K2SO4 + HOH Formula equation 2 KOH + H2SO4a K2SO4 + 2 HOH Balanced chemical equation Double Replacement

  19. 16. nitrogen + hydrogen a NH3 (ammonia) Remember Br I N Cl H O F N2 + H2a NH3 N2 + 3 H2a2 NH3 Balanced chemical equation Synthesis

  20. 17. Ca(ClO3)2 + Na3PO4a Ca+2PO4-3 + Na+1ClO3-1 Ca(ClO3)2 + Na3PO4a Ca3(PO4)2 + NaClO3 Formula equation 3 Ca(ClO3)2 + 2 Na3PO4a Ca3(PO4)2 + 6 NaClO3 Balanced chemical equation Double Replacement

  21. 18. hydrogen gas + copper(II) oxide a H2 + Cu+2O-2 a ? H2 + CuOa H+1O-2 + Cu H2 + CuOa H2O+ Cu Balanced chemical equation Single Replacement

  22. 19. NaClO3a Decomposition of chlorates produce chloridesand oxygen 2NaClO3a 2NaCl + O2 Balanced chemical equation Decomposition

  23. chlorine replaces I 20. KI + Cl2a K+1Cl-1 + I2 KI + Cl2a KCl + I2 Formula equation 2KI + Cl2a 2 KCl + I2 Balanced chemical equation Single Replacement

  24. +1 -2 21. H2 + S a hydrogen sulfide H2 + Sa H2S Formula equation H2 + Sa H2S Balanced chemical equation Synthesis

  25. 22. NH4OH a ? Decomposition …. of hydroxides produces water. NH4OH a ? + H2O NH3 Balanced chemical equation Decomposition

  26. 0 – 4 A 5 – 8 B 9 – 12 C 13 – 16 D

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