GCSE Chemistry OCR B J258

identify the difference between qualitative and quantitative analysis

explain how the mass of a solute and the volume of the solution is related to the concentration of the solution and calculate concentration using the formula:

$\text{concentration } (g/dm^3) = \dfrac{\text{mass of solute } (g)}{\text{volume } (dm^3)}$

explain how the concentration of a solution in mol/dm³ is related to the mass of the solute and the volume of the solution and calculate the molar concentration using the formula :

$\text{concentration } (mol/dm^3) = \dfrac{\text{moles of solute}}{\text{volume } (dm^3)}$

describe neutralisation as acid reacting with alkali to form a salt plus water including the common laboratory acids hydrochloric acid, nitric acid and sulfuric acid and the common alkalis, the hydroxides of sodium, potassium and calcium

recall that acids form hydrogen ions when they dissolve in water and solutions of alkalis contain hydroxide ions

recognise that aqueous neutralisation reactions can be generalised to hydrogen ions reacting with hydroxide ions to form water

describe and explain the procedure for a titration to give precise, accurate, valid and repeatable results PAG6

Evaluate the quality of data from titrations

**explain the relationship between the volume of a solution of known concentration of a substance and the volume or concentration of another substance that react completely together **