How do I go about diluting sulphuric acid to produce different concentrations in a 250 ml solution?
It is best to start with a solution of known concentration rather than with the pure acid. Diluting the pure acid is a hazardous business and it is next to impossible to get an exactly known concentration directly by dilution. Your laboratory will have a supply of sulphuric acid already diluted to 1 mol per cubic decimetre. Pipette 50 cm3 of this into a 100 cm3 volumetric flask and make up to the mark with pure water and you have a 0.5 mol dm3 solution. Similarly 20 cm3 made up to 100 cm3 gives a 0.2 mol dm3 solution and so on. Ulex Risk assessment Before attempting any practical work based on the advice and suggestions on this website, you must do the following. Identify any hazards, assess the risks from these hazards, and then decide appropriate control measures to reduce the risks. You must have these approved by those in authority in your school or college laboratory. Do not rely on what is said on this website. For further guidance see our tutorial on Risk Assessment.
