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balancingpractice

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Discover the best professional documents and content resources in AnyFlip Document Base. Search Published by mynamesumitra, 2019-10-24 02:56:11 แบบฝึกหัดการดุลสมการเคมี

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balancingpractice

Balancing Equations: Practice Problems1. Balance each of the following equations.(a) Fe + Cl2 −−→ FeCl3(b) Fe + O2 −−→ Fe2O3(c) FeBr3 + H2SO4 −−→ Fe2(SO4)3 + HBr(d) C4H6O3 + H2O −−→ C2H4O2(e) C2H4 + O2 −−→ CO2 + H2O(f) C4H10O + O2 −−→ CO2 + H2O(g) C7H16 + O2 −−→ CO2 + H2O(h) H2SiCl2 + H2O −−→ H8Si4O4 + HCl(i) HSiCl3 + H2O −−→ H10Si10O15 + HCl(j) C7H9 + HNO3 −−→ C7H6(NO2)3 + H2O(k) C5H8O2 + NaH + HCl −−→ C5H12O2 + NaClBalancing Equations: Answers to Practice Problems1. Balanced equations. (Coefficients equal to one (1) do not need to be shown in your answers). (a) 2 Fe + 3 Cl2 −−→ 2 FeCl3 (b) 4 Fe + 3 O2 −−→ 2 Fe2O3 (c) 2 FeBr3 + 3 H2SO4 −−→ 1 Fe2(SO4)3 + 6 HBr (d) 1 C4H6O3 + 1 H2O −−→ 2 C2H4O2 (e) 1 C2H4 + 3 O2 −−→ 2 CO2 + 2 H2O (f) 1 C4H10O + 6 O2 −−→ 4 CO2 + 5 H2O (g) 1 C7H16 + 11 O2 −−→ 7 CO2 + 8 H2O (h) 4 H2SiCl2 + 4 H2O −−→ 1 H8Si4O4 + 8 HCl (i) 10 HSiCl3 + 15 H2O −−→ 1 H10Si10O15 + 30 HCl (j) 1 C7H9 + 3 HNO3 −−→ 1 C7H6(NO2)3 + 3 H2O (k) 1 C5H8O2 + 2 NaH + 2 HCl −−→ 1 C5H12O2 + 2 NaClName: Date: Balancing EquationsBalance the following chemical equations.1. Fe + H2S04 Fe2(SO4)3 + H2 CO22. C2H6 + O2 H2O + H2O H2O3. KOH + H3PO4 K3PO4 + H2O HNO34. SnO2 + H2 Sn + HBr LiF5. NH3 + O2 NO + NH4NO36. KNO3 + H2CO3 K2CO3 +7. B2Br6 + HNO3 B(NO3)3 +8. BF3 + Li2SO3 B2(SO3)3 +9. (NH4)3PO4 + Pb(NO3)4 Pb3(PO4)4 +10. SeCl6 + O2 SeO2 + Cl2About Chemistry http://chemistry.about.comName: Date: Balancing EquationsBalance the following chemical equations.1. CH4 + O2 CO2 + H2O NaCl2. Na+ + Cl-3. Al + O2 Al2O3 NH34. N2+ + H2 C8H18(l) + Fe(l) +5. CO(g) + H2(g) H2O CO2(g)6. FeO3(s) + CO(g) H2O7. H2SO4 + Pb(OH)4 Pb(SO4)2 + H2 Ca(H2PO4)28. Al + HCl AlCl3 +9. Ca3(PO4)2 + H2SO4 CaSO4 +10. H3PO4 + HCl PCl5 + H2OAbout Chemistry http://chemistry.about.comName: Date: Balancing EquationsBalance the following chemical equations.1. SiCl4(l) + H2O(l) SiO2(s) + HCl(aq)2. As + NaOH Na3AsO3 + H23. Au2S3 + H2 Au + H2S4. V2O5 + HCl VOCl3 + H2O5. Hg(OH)2 + H3PO4 Hg3(PO4)2 + H2O6. SiO2 + HF SiF4 + H2O7. Zn + HCl ZnCl2 + H28. HClO4 + P4O10 H3PO4 + Cl2O79. N2(g) + O2(g) + H2O HNO3(aq)10. NH4NO3 N2 + O2 + H2OAbout Chemistry http://chemistry.about.comName: Date: Balancing EquationsBalance the following chemical equations.1. AgI + Na2S Ag2S + NaI H3PO42. Na3PO4 + HCl NaCl + NH33. Ba3N2 + H2O Ba(OH)2 + HCl NaCl4. TiCl4 + H2O TiO2 + Br2 H2O5. CaCl2 + Na3PO4 Ca3(PO4)2 + SO2 HCl6. NaBr + Cl2 NaCl + H2O7. Mg(OH)2 + HCl MgCl2 +8. FeS + O2 Fe2O3 +9. PCl5 + H2O H3PO4 +10. C2H6O + O2 CO2 +About Chemistry http://chemistry.about.com

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