How to Balance Mg + N2 = Mg3N2
How to Balance Mg + N2 = Mg3N2

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Magnesium metal is added to nitrogen gas

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3 Mg + N2 Mg3N2 Synthesis

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Excess chlorine gas is passed over hot iron filings

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3 Cl2 + 2 Fe 2FeCl3 Synthesis

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The gases boron trifluoride and ammonia are mixed

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Synthesis(Lewis Acid-Base Reaction)
BF3 + NH3 F3BNH3 Synthesis(Lewis Acid-Base Reaction)

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Solid zinc strips are added to a solution of copper(II) sulfate

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Zn + Cu2+ Zn2+ + Cu Single replacement

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A mixture of powdered iron(III) oxide and powdered aluminum metal is heated strongly

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Fe2O3 + 2Al Al2O3 + 2Fe Single Replacement

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Chlorine gas is bubbled into a solution of sodium bromide

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Cl2 + 2Br- 2Cl- + Br2 Single Replacement

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Solid calcium is added to warm water

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Ca + 2HOH Ca2+ + 2OH- + H2 Single Replacement

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Calcium metal is added to a dilute solution of hydrochloric acid

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Ca + 2H+ Ca2+ + H2 Single Replacement

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Aluminum metal is added to a solution of copper(II) chloride

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2Al + 3Cu2+ 2Al3+ + 3Cu Single Replacement

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A solution of tin(II) sulfate is added to a solution of iron(III) sulfate

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Sn2+ + 2Fe3+ Sn4+ + 2Fe2+ Redox

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A solution of tin(II) chloride is added to an acidified solution of potassium permanganate

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5Sn2+ + 16H+ + 2MnO4- 5Sn4+ + 2Mn2+ + 8HOH
Redox

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A solution of sodium iodide is added to an acidified (sulfuric acid) solution of potassium dichromate

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6I- + 13H+ + HSO4- + Cr2O72- 3I2 + 2Cr3+ + 7H2O + SO42- Redox

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A solution of sodium bromide is added to an acidified solution of potassium bromate

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5Br- + 6H+ + BrO3- 3Br2 + 3H2O Redox

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An acidified solution of potassium permanganate is added to a solution of sodium sulfite

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6H+ + 2MnO4- + 5SO32- 2Mn2+ + 5SO42- + 3 H2O
Redox

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Acidified potassium permanganate is added to a solution of sodium nitrite

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2MnO4- + 6H+ + 5NO2- -> 2Mn2+ + 3H2O + 5NO3-
Redox

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Potassium permanganate solution is added to concentrated hydrochloric acid

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2MnO4- + 16H+ + 10Cl- 2Mn2+ + 5Cl2 + 8H2O
Redox

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A solution of potassium iodide is added to an acidified solution of potassium dichromate

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6I- + 14H+ + Cr2O72- 3I- + 2Cr3+ + 7H2O Redox

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Magnesium turnings are added to a solution of iron(III) chloride

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Mg + 2Fe3+ Mg2+ + 2Fe2+ Redox

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Iron(III) ions are reduced by iodide ions

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2Fe3+ + 2I- 2Fe2+ + I2 Redox

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Powdered iron is added to a solution of iron(III) sulfate

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Fe + 2Fe3+ 3Fe2+ Redox

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Hydrogen peroxide is added to an acidified solution of sodium bromide

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H2O2 + 2H+ + 2Br- Br2 + 2H2O Redox

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Hydrogen peroxide is added to an acidified solution of potassium dichromate

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3H2O2 + 8H+ + Cr2O72- 2Cr3+ + 7H2O + 3O2 Redox

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Hydrogen gas is passed over hot iron(III) oxide

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3H2 + Fe2O3 2Fe + 3H2O Redox

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Hydrogen gas is passed over hot iron(II) oxide powder

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H2 + FeO Fe + H2O Redox

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Concentrated hydrochloric acid solution is added to solid manganese(IV) oxide and the reactants are heated

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4H+ + 2Cl- + MnO2 Cl2 + Mn2+ + 2H2O Redox

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A strip of copper metal is added to a concentrated solution of sulfuric acid

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Cu + 4H+ + SO42- Cu2+ + H2O + H2SO3 Redox

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A strip of copper is immersed in a nitric acid solution

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Cu + 4H+ + 2NO3- Cu2+ + 2NO2 + 2H2O Redox

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Chlorine gas is bubbled into a cold, dilute solution of potassium hydroxide

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Cl2 + 2OH- ClO- + Cl- + H2O Redox

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Propene gas is mixed with bromine vapor

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C3H6 + Br2 C3H6Br2 Organic (addition)

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Methane gas is heated with an excess of chlorine gas

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Organic (substitution)
CH4 + Cl2 CH3Cl + HCl Organic (substitution)

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Ethanol and formic acid (methanoic acid) are mixed and warmed

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Organic (esterification)
C2H5OH + HCOOH HCOOC2H5 + H2O Organic (esterification)

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Benzene is treated with bromine in the presence of a catalyst

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Organic (substitution)
Br2 + C6H6 C6H5Br + HBr Organic (substitution)

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Glacial acetic acid is mixed with liquid methanol (nonaqueous)

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Organic (esterification)
CH3COOH +CH3OH CH3COOCH3 + H2O Organic (esterification)

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Excess concentrated sulfuric acid is added to solid calcium phosphate

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Metathesis (double replacement)
3H+ + 3HSO4- + Ca3(PO4)2 3CaSO4 + 2H3PO4 Metathesis (double replacement)

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Trisodium phosphate crystals are added to water

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Metathesis (double replacement)
Na3PO4 + H2O 3Na+ + OH- + HPO42- Metathesis (double replacement)

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Solutions of sodium fluoride and dilute hydrochloric acid are mixed

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Metathesis (double replacement)
F- + H+ HF Metathesis (double replacement)

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Equal volumes of dilute equimolar solutions of sodium carbonate and hydrochloric acid are mixed

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Metathesis (double replacement)
CO32- + H+ HCO3- Metathesis (double replacement)

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Solutions of silver nitrate and sodium chromate are mixed

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Metathesis (double replacement)
2Ag+ + CrO42- Ag2CrO4 Metathesis (double replacement)

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Solutions of tripotassium phosphate and zinc nitrate are mixed

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Metathesis (double replacement)
3Zn2+ + 2PO43- Zn3(PO4)2 Metathesis (double replacement)

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Solutions of manganese (II) sulfate and ammonium sulfide are mixed

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Metathesis (double replacement)
Mn2+ + S2- MnS Metathesis (double replacement)

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Solid lithium hydride is added to distilled water

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Metathesis (double replacement)
LiH + H2O Li+ + OH- + H2 Metathesis (double replacement)

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Hydrogen sulfide gas is bubbled through a solution of potassium hydroxide

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Metathesis (double replacement)
H2S + 2OH- S2- + 2H2O Metathesis (double replacement)

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Hydrogen sulfide gas is added to a solution of cadmium nitrate

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Metathesis (double replacement)
H2S + Cd2+ CdS + 2H+ Metathesis (double replacement)

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Dilute hydrochloric acid is added to a solution of potassium sulfite

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Metathesis (double replacement)
2H+ + SO32- H2O + SO2 Metathesis (double replacement)

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Dilute hydrochloric acid is added to a dilute solution of mercury(I) nitrate

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Metathesis (double replacement)
2Cl- + Hg22+ Hg2Cl2 Metathesis (double replacement)

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Concentrated hydrochloric acid is added to solid manganese(II) sulfide

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Metathesis (double replacement)
2H+ + MnS H2S + Mn2+ Metathesis (double replacement)

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A solution of copper(II) sulfate is added to a solution of barium hydroxide

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Metathesis (double replacement)
Cu2+ + SO42- + Ba2+ + 2OH- Cu(OH)2 + BaSO4 Metathesis (double replacement)

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A solution of copper(II) chloride is added to a solution of sodium sulfide

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Metathesis (double replacement)
Cu2+ + S2- CuS Metathesis (double replacement)

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Solid calcium phosphate is added to excess hydrochloric acid

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Metathesis (double replacement)
Ca3(PO4)2 + 6H+ 2H3PO4 + 3Ca2+ Metathesis (double replacement)

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Solid barium peroxide is added to cold dilute sulfuric acid

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Metathesis (double replacement)
BaO2 + H+ + HSO4- BaSO4 + H2O2 Metathesis (double replacement)

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Solid barium carbonate is added to an excess of dilute nitric acid

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Metathesis (double replacement)
BaCO3 + 2H+ Ba2+ + H2O + CO2 Metathesis (double replacement)

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A solution of ammonium sulfate is added to a saturated solution of barium hydroxide

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Metathesis (double replacement)
NH4+ + SO42- + Ba2+ + OH- BaSO4 + NH3 + H2O Metathesis (double replacement)

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A dilute solution of sulfuric acid is electrolyzed between platinum electrodes

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2H2O 2H2 + O2 Electrolysis

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A solution of potassium iodide is electrolyzed

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2I- + 2H2O I2 + H2 + 2OH- Electrolysis

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A solution of copper(II) sulfate is electrolyzed using inert electrodes

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2Cu2+ + 2H2O 2Cu + O2 + 4H+ Electrolysis

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Solid potassium chlorate is heated in the presence of manganese dioxide as a catalyst

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2KClO3 2KCl + 3O2 Decomposition

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A solution of hydrogen peroxide is catalytically decomposed

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2H2O2 2H2O + O2 Decomposition

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Solid calcium sulfite is heated in a vacuum

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CaSO3 CaO + SO2 Decomposition

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Solid ammonium carbonate is heated

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(NH4)2CO3 NH3 + CO2 + H2O Decomposition

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Excess concentrated sodium hydroxide solution is added to solid aluminum hydroxide

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OH- + Al(OH)3 [Al(OH)4]- Complex ion

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Excess hydrochloric acid is added to a solution of diamminesilver(I) nitrate

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2H+ + Cl- + [Ag(NH3)2]+ AgCl + 2NH4+
Complex ion

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A solution of ammonium triocyanate is added to a solution of iron(III) chloride

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Fe3+ + SCN- [FeSCN]2+ [or [Fe(SCN)6]3-] Complex ion

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A concentrated solution of ammonia is added to a solution of zinc iodide

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4NH3 + Zn2+ [Zn(NH3)4]2+ Complex ion

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A concentrated solution of ammonia is added to a suspension of zinc hydroxide

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4NH3 + Zn(OH)2 [Zn(NH3)4]2+ + 2OH- Complex ion

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Aqueous ammonia is added to solid silver chloride

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2NH3 + AgCl [Ag(NH3)2]+ + Cl- Complex ion

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A solution of diamminesilver(I) chloride is treated with dilute nitric acid

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[Ag(NH3)2]+ + Cl- + 2H+ AgCl + 2NH4+
Complex ions

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Solid zinc sulfide is heated in an excess of oxygen

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2ZnS + 3O2 ZnO + 2SO2 Combustion

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Lithium metal is burned in air

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4Li + O2 2Li2O Combustion

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Ethene gas is burned in air

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C2H4 + 3O2 CO2 + 2H2O Combustion

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Ethanol is burned in oxygen

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2C2H5OH + 6O2 4CO2 + 6H2O Combustion

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Solid copper(II) sulfide is heated strongly in oxygen gas

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CuS + O2 Cu + SO2 Combustion

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Carbon disulfide vapor is burned in excess oxygen

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CS2 + 3O2 CO2 + 2SO2 Combustion

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A piece of solid bismuth is heated strongly in oxygen

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4Bi + 3O2 2Bi2O3 Combustion

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Sulfur trioxide gas is added to excess water

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SO3 + H2O H+ + HSO4- Acetic anhydride

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Sulfur dioxide gas is passed over solid calcium oxide

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SO2 + CaO CaSO3 Anhydride

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Phosphorus(V) oxide powder is sprinkled over distilled water

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P4O10 (or P2O5) + 6H2O 4H3PO4 Acetic anhydride

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Solid dinitrogen pentoxide is added to water

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