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Grade 12 IEB Physical Science (Chemistry) Quantitative Chemistry (Section A) summary & notes

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This aesthetic, in-depth, neatly typed document summarises Section A of the IEB Grade 12 Chemistry syllabus: Quantitative Chemistry. This document includes the full Section A syllabus, all definitions, additional class notes, own research notes and all relevant diagrams.

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Quantitative Chemistry:


Molar mass: Mass in grams of one mole of that substance

m • n : Number of mol
n= • m : mass (grams, g)
M • M : Molar mass (g.mol)



STP: Standard temperature and pressure

At STP, 1 mole of any gas occupies 22,4 dm3

V • n : Number of mol
n= • V : Volume (litre, l)
Vm • Vm : Constant (22,4 dm3 :mol¡1 )



NOTE:
1cm3 = 1ml
t
£1000

1dm3 = 1l



Concentration of solutions:

Solution: Homogenous mixture of solute and solvent

Solute: Substance that is dissolved in solution

Solvent: Substance in which another substance is dissolved, forming a solution

Concentration: Amount of solute per unit volume of solution

n • c : Concentration m • c : Concentration
c= • n : Number of mol solute or c= • m : Mass (grams, g)
V • V : Volume of solution M :V • M : Molar mass
• V : Volume

Stoichiometric calculations:

Balancing numbers give mole ratio



Given
! balanced equation
! asked

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