Preparation of concentrated solutions of some common solutes by means of calculated molalities

The preparation of high molar concentrations of many solutes can often be very time-consuming owing to the substantial volume, and sometimes temperature, changes which occur as the solute dissolves. By contrast, the preparation of solutions of a given molality is much simpler since all that is required is to mix known weights of the solute and solvent. This paper describes a simple method and a computer program (MOLAL) for preparing known volumes of a given molarity for twenty commonly-used solutes, by means of calculated molalities; the density of the resulting solutions is also given.