(f) Acids, alkalis and titrations

Describe the use of litmus, phenolphthalein and methyl orange to distinguish between acidic and alkaline solutions

Understand how to use the pH scale, from 0-14, can be used to classify solutions as strongly acidic (0-3), weakly acidic (4-6), neutral (7), weakly alkaline (8-10) and strongly alkaline (11-14)

Describe the use of universal indicator to measure the approximate pH value of an aqueous solution

Know that acids in aqueous solution are a source of hydrogen ions and alkalis in a aqueous solution are a source of hydroxide ions

Know that alkalis can neutralise acids

Describe how to carry out an acid-alkali titration