IGCSE chem imp equations!

I earlier today posted an ss of colours of different compounds and heres some more imp things.

To the F/M 25, its finally here we got this<3

Equations for chemistry igcse 0620

ACID AND BASE

  1. Acid + metal salt + hydrogen

More reactive than hydrogen

  1. Acid + carbonate salt + water + carbon dioxide

  2. Acid + base salt + water

  3. Alkali + ammonium salt salt + water + ammonia gas

EXTRACTON

  1. C + O2 CO2

  2. CO2 + C 2CO

  3. 2 Fe2O3 + 3C 4Fe + 3CO2

  4. Fe2O3 + 3CO 2Fe + 3CO2

  5. Limestone lime + carbon dioxide

 CaCO3 CaO + CO2

  1. Lime + silica calcium silicate

 CaO + SiO2 CaSiO3

  1. Limestone + silica slag + carbon dioxide

 CaCO3 + SiO2 CaSiO3 + CO2

  1. 2ZnS + 3O2 2ZnO + 2SO2

  2. ZnCO3 ZnO + CO2

10.ZnO + H2SO4 ZnSO4 + H2O

11.2ZnO + C 2Zn + CO2

Thermal Decomposition:

  1. Most Metal Carbonate Metal oxide + carbon dioxide

CaCO3 CaO + CO2

  1. Most Metal Sulphate Metal Oxide + Sulphur trioxide

CaSO4 CaO + SO3

  1. Hydroxides:

A. most Metal hydroxide Metal Oxide + water

Ca(OH)2 CaO + H2O

B. EXCEPT:

NaOH No Effect

KOH No Effect

4. Nitrates:

A. most Metal Nitrate Metal Oxide + Nitrogen dioxide +Oxygen

2 Ca(NO3)2 2 CaO + 4NO2 +O2

B. EXCEPT:

2KNO3 2KNO2+O2

2NaNO3 NaNO2 + O2

AIR AND WATER

  1. 2H2O2 2H2O + O2

Condition: catalyst (Mno2)

  1. 2NO2 N2 + O2

  2. 2CO + O2 2CO2

NON-METALS

  1. MnO2 + 4HCl MnCl2 + Cl2 + 2H2O

  2. 2Na + 2H2O 2NaOH + H2

  3. Mg H2O MgO + H2

  4. Zn + 2HCl ZnCl2 + H2O

5. Haber process

N2 + 3H2 2NH3

Conditions: 1. 450C

  1. 200 atm pressure

  2. Catalyst iron

  3. S + O2 SO2

7. Contact process

a. 2SO2 + O2 2SO3

Conditions: 1. 450C

  1. 2 atm

  2. Catalyst vanadium(v) oxide (V2O5)

b. SO3 + H2SO4 H2S2O7

c. H2S2O7 + H2O 2H2SO4

Organic

1. Complete combustion produces Carbon dioxide + water

  1. Incomplete combustion produces Carbon monoxide + water

3. Substitution reaction

Condition: sunlight

4. Cracking of alkanes

Conditions: 1. Heat 600-700C

  1. Catalyst Al2O3

5. Addition reactions:

A. alkene + hydrogen alkane

Conditions: 1.150-300C

  1. Catalyst nickel

B. alkene + water alcohol

Conditions: 1. 300C

  1. 60 atm

  2. Catalyst phosphoric acid

C. Addition of bromine

No catalyst needed

D. Addition polymerization

Conditions 1.catlasyt

2.High pressure

3.High temperature

  1. Alcohol + metal salt + hydrogen

7. Dehydration

Alcohol- alkene

Conditions: Concentrated H2SO4

8. Fermentation

Glucose ethanol + carbon dioxide

C6H12O6 2C2H5OH +2CO2

Conditions: 1. 37C

2.yeast

3.zymase,enzyme

9. Oxidation

Alcohol carboxylic acid

10.Carboxylic acid + base salt + water

11.Carboxylic acid + metal salt + hydrogen

12.Carboxylic acid + metal carbonate salt + carbon dioxide + water

13.Alcohol + Carboxylic acid ester

Condition: concentrated H2SO4