Concentration of Solutions (AQA GCSE Chemistry): Flashcards

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Using Concentrations in mol/dm3
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Definition of concentration

Measure of solute present in given volume of solution

Solute definition

Substance being dissolved

Solvent definition

Liquid in which solute is dissolved

Two ways to express concentration

g/dm³ and mol/dm³

What mol/dm³ tells us

Moles of solute in each dm³ of solution

What a mole represents

Unit representing specific number of particles

Avogadro's number

6.02×10236.02 \times 10^{23} particles

Formula for concentration in mol/dm³

MolesVolume (dm3)\frac{\text{Moles}}{\text{Volume (dm}^3\text{)}}

Formula to calculate moles from mass

Mass (g)Mr\frac{\text{Mass (g)}}{Mr}

What Mr stands for

Relative Formula Mass

Relationship between two reacting solutions

C1×V1=C2×V2C_1 \times V_1 = C_2 \times V_2

Moles when two solutions react completely

Moles of one reactant equal moles of other

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