Mg3N2

1
Mg3N2
Mg N2?
Pb2 Ag
Pb Ag?
BaSO4 NH3 H2O
NH4 SO2 Ba2 OH-?
HC2H3O2 HCO31-?
H2O CO2
2
Patterns of Reactivity
Na2Cr2O72- I- ?
Cr3 I2 Na
CH3CH2OH O2 ?
CO2 H2O
H2 Fe2O3 ?
Fe H2O
I- IO2- ?
I2
3
H SO4- CaF2 ?
CaSO4 HF
(NH4)2CO3 ?
NH3 H2O CO2
H2O2 Br- ?
H2O Br2
Cl- Hg22 ?
Hg2Cl2
4
Patterns of Reactivity
Na H2O ?
NaOH H2
H HCO3-?
CO2 H2O
Ca H2O ?
Ca2 OH- H2
H2S Ni2 ?
NiS H
5
Al(OH)3 OH- ?
Al(OH)4-
Ag H NO3- ?
Ag NO H2O
OH- H2PO4- ?
H2O PO43-
H2O2 Fe2 ?
H2O Fe3
6
Patterns of Reactivity

• Solid aluminum oxide is added to a solution of
  sodium
• hydroxide

Al2O3(s) OH- ?
Al(OH)4-

• Solid calcium oxide is heated in the presence of
  sulfur trioxide

CaO(s) SO3(g) ?
CaSO4(s)

• Calcium metal is heated strongly in nitrogen gas

Ca(s) N2(g) ?
Ca3N2(s)

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

CuO(s) SO2(g)
CuS(s) O2(g) ?
7
Patterns of Reactivity

• Samples of boron trifluoride and ammonia are mixed

BF3 NH3 ?
F3BNH3

• A concentrated solution of hydrochloric acid is
  added to
• powdered manganese (IV) oxide and gently heated

MnO2(s) H Cl- ?
Mn2 Cl2(g) H2O

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

NH3 Zn2 ?
Zn(NH3)42

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

Cu(OH2)(s) BaSO4(s)
Cu2 SO42- Ba2 OH- ?
8
Patterns of Reactivity

• Solid lithium hydride is added to water

LiH H2O ?
Li OH- H2

• Carbon dioxide gas is bubbled through an aqueous
  suspension
• of calcium carbonate

CO2(g) CaCO3(s) H2O ?
Ca2 HCO3- OH-

• Excess hydrochloric acid is added to a solution
  of potassium
• sulfite

H SO32- ?
H2SO3 ? H2O SO2(g)

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

Sn4 Mn2 H2O
Sn2 MnO4- H ?
9
Patterns of Reactivity

• A solution of ammonium thiocyanate is added to a
  solution
• of iron (II) chloride

SCN- Fe3 ?
Fe(SCN)2 or Fe(SCN)63-

• Carbon disulfide vapor is burned in excess oxygen

CS2(g) O2(g) ?
CO2(g) SO2

• Dilute sulfuric acid is added to a solution of
  barium chloride

H HSO4- Ba2 ?
BaSO4(s) H

• Potassium dichromate solution is added to an
  acidified
• solution of sodium sulfite

Cr3 SO42- H2O
H Cr2O72- SO32- ?
10
Patterns of Reactivity

• A mixture of solid calcium oxide and solid
  tetraphosphorus
• decaoxide is heated

CaO P4O10 ?
Ca3(PO4)2(s)

• An excess of sodium hydroxide is added to a
  solution of
• aluminum chloride

OH- Al(H2O)63 ?
Al(OH)4- H2O

• Solid aluminum sulfide is added to water

Al2S3 H2O ?
Al(OH)3(s) H2S

• solid ammonium chloride as reacted with a
  solution of
• sodium hydroxide

NH3(g) Cl- H2O
NH4Cl(s) OH- ?
11
CH3CH2CH2OH O2 ?
CO2 H2O
MnO2
KClO3 ?
KCl O2
THE END