Comparing concentration with strength
Lesson 13 / 19
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I can use the pH scale to work out concentration differences between solutions relating to their pH, and discuss the differences between strong and weak acids.
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pH is a logarithmic scale (as hydrogen ion concentration increases by a factor of 10, the pH decreases by 1).
For a given concentration, a stronger acid contains more H⁺ ions.
Titration curves can be used to show the change in pH to allow chemists to pinpoint a more accurate end point.
A strong acid is completely ionised in aqueous solution, a weak acid only partially ionises.
Titration curves show how the pH changes throughout a neutralisation reaction.
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