3.1.15

Concentrations & Amounts

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Concentrations of Solutions

The concentration of a solution can be measured in terms of:

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Moles

  • Solution concentration (mol/dm3) = amount of substance (mol) ÷ volume (dm3)
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Mass

  • Solution concentration (g/dm3) = mass of substance (g) ÷ volume (dm3)

Calculations Using Equations for the Concentrations of Solutions

We can use information about a solution to work out which chemicals were in it to start with.

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Amount of a solute

  • We can calculate the amount of a solute (dissolved substance) in a solution if we know:
    • The concentration of the solution.
    • The volume of the solution.
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Concentration of a solution

  • We can calculate the concentration of a solution if we know:
    • The volumes of 2 solutions that react completely.
    • The concentration of 1 of these solutions.

Jump to other topics

1Atomic Structure

2Chemical Bonding

3Quantitative Chemistry

4Chemical Changes

5Energy Changes

6The Rate & Extent of Chemical Change

7Organic Chemistry

8Chemical Analysis

9Chemistry of the Atmosphere

10Using Resources

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