G'DAY FELLAS
First of all this is not a troll, second of all I'm generous enough to give you all the chemical equations in the HSC Course CAUSE I CAN.
Table of Contents
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Moving on:
How to write chemical equations:
- An important part of the Preliminary course, that you must continue with throughout the HSC course, is learning how to:
- construct word equations, e.g: methane + oxygen -> carbon dioxide + water
- balance formulae equations, e.g: CH4 + 2O2 -> CO2 + 2H2O
You must be able to do this for the reactions you encounter in every module that you study, core and option.
There are three important steps involved:
- Show all reactants and all products in the word equation.
- Write the correct formula for each reactant and each product.
- Balance the formula equation by placing coefficients (numbers) in front of formulas so that you have the same total number of each kind of atom on both the reactant side and the product side.
- Remember that in chemical reactions atoms are just rearranged, not created or destroyed.
Summary of Chemical Equations Encountered in the Course (Useful List :P)
Production of Materials
Dissolving Bromine:
Br2 (aq) + H2O(l) <equil> HOBr(aq) + HBr(aq)
Bromine Decolourisation:
Alkene:
cyclohexene(aq) + 2HOBr(aq) -> dibromocyclohexane(aq)
Alkane
Thermal Cracking
Cracking of Decane
Chemical Equations
C10H22-> 2C5H11 (radicals)
C5H11 (radical) -> C3H7 (radical) + C2H4
2C3H7 (radical) -> C6H14
Word Equations
Decane -> Pentyl radicals
Pentyl radicals -> Propyl radical + Ethene
Propyl radical -> Hexane
(HSC) Cracking of ethane
Chemical Equations
C2H6 (g) -> C2H4 (g) + H2 (g)
$\Delta$ H = +138 kJ/mol
Word Equations
Ethane -> Ethene + Hydrogen + 138 kJ/mol Energy
Catalytic cracking
(HSC) Catalytic cracking of Decane
Chemical Equations
C10H22 (l) -(zeolite)1> C2H4 (g) + C8H18 (l)
Word Equations
Decane -(zeolite)> Ethene + Octane
(HSC) Addition Reactions2
Hydrogenation
Chemical Equations
C2H4 (g) + H2 (g) -(nickel)> C2H6 (g)
Word Equations
Ethene + Hydrogen -(nickel)> Ethane
Hydrohalogenation
Chemical Equations
CH2CH2 (aq) + HCl(aq) -> CH3CH2Cl(aq)
Word Equations
Ethene + Hydrochloric Acid -> Chloroethane
Production of Ethanol (also hydration reaction)
Chemical Equations
CH2CH2 (aq) +H2O(l) -(H2SO4)> CH3CH2OH(aq)
Word Equations
Ethene + Water -> Ethanol
Oxidation
Vinyl Chloride
Chemical Equation
4CH2CH2 (g) + 2Cl2 (g) + O2 (g) -> 4CH2CHCl(g) + 2H2O(g)
Word Equation
Ethene + Chlorine + Oxygen -> Vinyl chloride + Water
Alkylation
Production of Styrene
Chemical Equations
C6H6 + CH2CH2 -> C6H5(C2H5)
C6H5(C2H5) + S _> C6H5(CHCH2) + H2S
Word Equations
CEEBS
Polymerisation
** Initiation **
Ra(radical) + CH2=CH2 -> RaCH2CH2 (radical)
** Propagation **
RaCH2CH2 (radical) + nCH2=CH2 -> Ra(CH2=CH2)n(radical)
** Termination **
Ra(CH2=CH2)n(radical) + Ra(CH2=CH2)n(radical) -> Ra(CH2-CH2)nRa