1. Magnesium metal is added to nitrogen gas

2. 3 Mg + N2  Mg3N2
Synthesis

3. Excess chlorine gas is passed over hot iron filings

4. 3 Cl2 + 2 Fe  2FeCl3
Synthesis

5. The gases boron trifluoride and ammonia are mixed

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

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

8. Zn + Cu2+  Zn2+ + Cu
Single replacement

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

10. Fe2O3 + 2Al  Al2O3 + 2Fe
Single Replacement

11. Chlorine gas is bubbled into a solution of sodium bromide

12. Cl2 + 2Br-  2Cl- + Br2
Single Replacement

13. Solid calcium is added to warm water

14. Ca + 2HOH 
Ca2+ + 2OH- + H2
Single Replacement

15. Calcium metal is added to a dilute solution of hydrochloric acid

16. Ca + 2H+  Ca2+ + H2
Single Replacement

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

18. 2Al + 3Cu2+  2Al3+ + 3Cu
Single Replacement

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

20. Sn2+ + 2Fe3+  Sn4+ + 2Fe2+
Redox

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

22. 5Sn2+ + 16H+ + 2MnO4-  5Sn4+ + 2Mn2+ + 8HOH
Redox

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

24. 6I- + 13H+ + HSO4- + Cr2O72-
 3I2 + 2Cr3+ + 7H2O + SO42-
Redox

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

26. 5Br- + 6H+ + BrO3-  3Br2 + 3H2O
Redox

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

28. 6H+ + 2MnO4- + 5SO32-  2Mn2+ + 5SO42- + 3 H2O
Redox

29. Acidified potassium permanganate is added to a solution of sodium nitrite

30. 2MnO4- + 6H+ + 5NO2- -> 2Mn2+ + 3H2O + 5NO3-
Redox

31. Potassium permanganate solution is added to concentrated hydrochloric acid

32. 2MnO4- + 16H+ + 10Cl-  2Mn2+ + 5Cl2 + 8H2O
Redox

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

34. 6I- + 14H+ + Cr2O72-
3I- + 2Cr3+ + 7H2O
Redox

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

36. Mg + 2Fe3+ Mg2+ + 2Fe2+
Redox

37. Iron(III) ions are reduced by iodide ions

38. 2Fe3+ + 2I- 2Fe2+ + I2
Redox

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

40. Fe + 2Fe3+ 3Fe2+
Redox

41. Hydrogen peroxide is added to an acidified solution of sodium bromide

42. H2O2 + 2H+ + 2Br-
Br2 + 2H2O
Redox

43. Hydrogen peroxide is added to an acidified solution of potassium dichromate

44. 3H2O2 + 8H+ + Cr2O72- 2Cr3+ + 7H2O + 3O2
Redox

45. Hydrogen gas is passed over hot iron(III) oxide

46. 3H2 + Fe2O3
2Fe + 3H2O
Redox

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

48. H2 + FeO Fe + H2O
Redox

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

50. 4H+ + 2Cl- + MnO2
Cl2 + Mn2+ + 2H2O
Redox

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

52. Cu + 4H+ + SO42-
Cu2+ + H2O + H2SO3
Redox

53. A strip of copper is immersed in a nitric acid solution

54. Cu + 4H+ + 2NO3- 
Cu2+ + 2NO2 + 2H2O
Redox

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

56. Cl2 + 2OH- 
ClO- + Cl- + H2O
Redox

57. Propene gas is mixed with bromine vapor

58. C3H6 + Br2 C3H6Br2
Organic (addition)

59. Methane gas is heated with an excess of chlorine gas

60. Organic (substitution)
CH4 + Cl2
CH3Cl + HCl
Organic (substitution)

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

62. Organic (esterification)
C2H5OH + HCOOH
HCOOC2H5 + H2O
Organic (esterification)

63. Benzene is treated with bromine in the presence of a catalyst

64. Organic (substitution)
Br2 + C6H6 
C6H5Br + HBr
Organic (substitution)

65. Glacial acetic acid is mixed with liquid methanol (nonaqueous)

66. Organic (esterification)
CH3COOH +CH3OH
CH3COOCH3 + H2O
Organic (esterification)

67. Excess concentrated sulfuric acid is added to solid calcium phosphate

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

69. Trisodium phosphate crystals are added to water

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

71. Solutions of sodium fluoride and dilute hydrochloric acid are mixed

72. Metathesis (double replacement)
F- + H+  HF
Metathesis (double replacement)

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

74. Metathesis (double replacement)
CO32- + H+ HCO3-
Metathesis (double replacement)

75. Solutions of silver nitrate and sodium chromate are mixed

76. Metathesis (double replacement)
2Ag+ + CrO42-
Ag2CrO4
Metathesis (double replacement)

77. Solutions of tripotassium phosphate and zinc nitrate are mixed

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

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

80. Metathesis (double replacement)
Mn2+ + S2- MnS
Metathesis (double replacement)

81. Solid lithium hydride is added to distilled water

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

83. Hydrogen sulfide gas is bubbled through a solution of potassium hydroxide

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

85. Hydrogen sulfide gas is added to a solution of cadmium nitrate

86. Metathesis (double replacement)
H2S + Cd2+
CdS + 2H+
Metathesis (double replacement)

87. Dilute hydrochloric acid is added to a solution of potassium sulfite

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

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

90. Metathesis (double replacement)
2Cl- + Hg22+ Hg2Cl2
Metathesis (double replacement)

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

92. Metathesis (double replacement)
2H+ + MnS
H2S + Mn2+
Metathesis (double replacement)

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

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

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

96. Metathesis (double replacement)
Cu2+ + S2- CuS
Metathesis (double replacement)

97. Solid calcium phosphate is added to excess hydrochloric acid

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

99. Solid barium peroxide is added to cold dilute sulfuric acid

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

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

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

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

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

105. A dilute solution of sulfuric acid is electrolyzed between platinum electrodes

106. 2H2O 2H2 + O2
Electrolysis

107. A solution of potassium iodide is electrolyzed

108. 2I- + 2H2O 
I2 + H2 + 2OH-
Electrolysis

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

110. 2Cu2+ + 2H2O 
2Cu + O2 + 4H+
Electrolysis

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

112. 2KClO3 2KCl + 3O2
Decomposition

113. A solution of hydrogen peroxide is catalytically decomposed

114. 2H2O2 2H2O + O2
Decomposition

115. Solid calcium sulfite is heated in a vacuum

116. CaSO3 CaO + SO2
Decomposition

117. Solid ammonium carbonate is heated

118. (NH4)2CO3  NH3 + CO2 + H2O
Decomposition

119. Excess concentrated sodium hydroxide solution is added to solid aluminum hydroxide

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

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

122. 2H+ + Cl- + [Ag(NH3)2]+  AgCl + 2NH4+
Complex ion

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

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

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

126. 4NH3 + Zn2+ 
[Zn(NH3)4]2+
Complex ion

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

128. 4NH3 + Zn(OH)2 
[Zn(NH3)4]2+ + 2OH-
Complex ion

129. Aqueous ammonia is added to solid silver chloride

130. 2NH3 + AgCl 
[Ag(NH3)2]+ + Cl-
Complex ion

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

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

133. Solid zinc sulfide is heated in an excess of oxygen

134. 2ZnS + 3O2  ZnO + 2SO2
Combustion

135. Lithium metal is burned in air

136. 4Li + O2  2Li2O Combustion

137. Ethene gas is burned in air

138. C2H4 + 3O2  CO2 + 2H2O
Combustion

139. Ethanol is burned in oxygen

140. 2C2H5OH + 6O2  4CO2 + 6H2O
Combustion

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

142. CuS + O2  Cu + SO2 Combustion

143. Carbon disulfide vapor is burned in excess oxygen

144. CS2 + 3O2  CO2 + 2SO2
Combustion

145. A piece of solid bismuth is heated strongly in oxygen

146. 4Bi + 3O2  2Bi2O3 Combustion

147. Sulfur trioxide gas is added to excess water

148. SO3 + H2O H+ + HSO4-
Acetic anhydride

149. Sulfur dioxide gas is passed over solid calcium oxide

150. SO2 + CaO CaSO3
Anhydride

151. Phosphorus(V) oxide powder is sprinkled over distilled water

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

153. Solid dinitrogen pentoxide is added to water