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PLANNING The task set is to find the exact concentration of an acid solution. It is believed to have a concentration of between 0.05 and 0.15 mol dm¯³. Introduction: Acids dissolve in water with dissociation and the formation of hydrogen ions. They are classed as strong or weak depending on the extent to which this dissociation occurs. Bases are substances that liberate hydroxide ions in water. They too are classed as weak or strong. The strength of an acid will depend upon its tendency to donate protons. Similarly, the strength of a base will depend upon its tendency to accept protons: the stronger this tendency, the stronger the acid or base. An acid with a strong tendency to lose a proton (a "strong acid") will have a conjugate base with a weak tendency to accept a proton (a "weak base"). An acid with a weak tendency to lose a proton (a "weak acid") will...

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