A white precipitate forms if sulfate ions are present. Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. Carbonate ions also produce a white precipitate ...

If a mixture of ions is present, some of the flame colours may not be clearly visible. For example, the yellow colour from sodium ions is very intense and tends to hide the paler lilac colour from ...

An online lecture for Sixth Form Students. This online presentation will focus on revising some of the key properties and reactions of the Transition Metals as required for the majority of the current ...