Jan 6

Jan 6 - First class back from christmas break

Balancing with C, H, & O

1.) CH4 + O2 ---> CO2 + H2O
CH4 + O2 ---> CO2 + 2H2O
2.) CHH6 + O2 ---> CO2 + H2O
2CHH6 + 7O2 ---> 4CO2 + 6H2O
3.) C8H18 + O2 ----> CO2 + H2O
2C8H18 + 25O2 ----> 16CO2 + 18H2O

ALCOHOLS:
- Octane = most important chemical used to dilate fuel gas for cars
- OH means alcohol (Ex. C2H5OH = ethane)

Examples:
1.) CH3OH + O2 ---> CO2 + H2O
2CH3OH + 3O2 ---> 2CO2 + 4H2O
2.) C2H5OH + O2 ---> CO2 +H20
C2H5OH + 3O2 ---> 2CO2 +3H20

WORDS TO BALANCED EQUATIONS:

Example 1:
Aluminum chloride is mixed with potassium carvbonate. Aluminum carbonate and potassium chloride are formed.
Write the equation and balance:
AlCl3 + K2CO3 -----> Al2(CO3)3 + KCl
2 AlCl3 + 3 K2CO3 -----> 1 Al2(CO3)3 + 6 KCl

Example 2:
Aluminum metal reacts violently with bromine to produce aluminum bromide.
Al + Br2 -----> AlBr3
2 Al + 3 Br2 -----> 2 AlBr3

Example 3:
Magnesium sulphate hepta hydratee decomposes to form water and magnesium sulphate.
MgSO4 - 7 H2O -----> MgSO4 + 7 H2O


Acids - NEED TO KNOW:
HCl - Hydrochloric Acid
HNO3 - Nitric Acid
H2SO4 - Sulphuric Acid
H3PO4 - Phosphoric Acid
CH3COOH - Acetic Acid

EXTRA Practice:
1.) NH3 + O2 ---> NO + H2O
4NH3 + 5O2 ---> 4NO + 6H2O
2.) (NH4)2C2O4 + AlCl3 ---> Al2(C2O4)2 + NH4Cl
3(NH4)2C2O4 + 2AlCl3 ---> Al2(C2O4)2 + 6NH4Cl

3.) aluminum metal reacts with bromine to form aluminum bromide
2Al + 3Br ---> 2AlBr3