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Equations 1
Equations 2
Equations 3
Equations 4
Equations 5
100
A solution of potassium carbonate is added to a solution of strontium nitrate.

CO3-2 + Sr+2  → SrCO3

100
Zinc metal is placed in a solution of copper (II) sulfate.

Zn + Cu+2  → Zn+2 + Cu

100
Ammonia gas is bubbled into a solution of hydrofluoric acid.

NH3+ HF  → NH4+1 + F-1

100
A solution of nickel (II) bromide is added to a solution of potassium hydroxide.

Ni+2 + 2OH-1  → Ni(OH)2

100
A strip of magnesium metal is placed in a solution of iron (II) chloride.

Mg + Fe+2  → Mg+2 + Fe

200
Solid calcium carbonate is added to acetic acid.

CaCO3 + 2CH3COOH  → Ca+2 + 2CH3COO-1 + CO2 + H2O

200
A solution of sodium fluoride is added to a solution of hydrochloric acid in a test tube.

F-1 + H+1  → HF

200
Solid silver chloride is added to a solution of concentrated hydrochloric acid.

AgCl + Cl-1  → [AgCl2]-1]

300
Solid aluminum hydroxide is added to a concentrated a solution of potassium hydroxide.

Al(OH)3 + OH-1  → [Al(OH)4]-1

or

Al(OH)3 + 2OH-1  → [Al(OH)5]-2

or

Al(OH)3 + 3OH-1  → [Al(OH)6]-3

300
Propene is burned in air.

2C3H6 + 9O2  → 6CO2 + 6H2O

300
A small piece of potassium is added to water.

2K + 2H2O  → 2K+1 + 2OH-1 + H2

300
Excess concentrated hydrochloric acid is added to a solution of nickel (II) nitrate.

4Cl-1 + Ni+2  → [NiCl4]-2

400
Boron trifluoride gas is added to ammonia gas.

BF3 + NH3  → BF3NH3

400
Excess ammonia is added to a solution of zinc nitrate.

4NH3 + Zn+2  → [Zn(NH3)4]+2

400
Solid calcium carbonate is strongly heated.

CaCO3  → CaO + CO2

400
Hexane is combusted in air.

2C6H14 + 19O2  → 12CO2 + 14H2O

400
Boron trifluoride gas is mixed with ammonia gas.

BF3 + NH3  → BF3NH3

500
Ethanoic acid is added to a solution of barium hydroxide.

CH3COOH + OH-1  → CH3COO-1 + H2O

500
Solid potassium chlorate is strongly heated.

2KClO3  → 2KCl + 3O2

500
Hydrogen phosphide gas (phosphine) is added to boron trichloride gas.

PH3 + BCl3  → PH3BCl3