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Published byEugene Jordan Modified over 9 years ago
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Standard solution : a solution of known concentration A series of titration is carried out. In each titration, a small amount of solution from the burette is added to a fixed volume of another solution with a pipette, in the presence of an indicator. The addition of the solution is continued until the indicator just changes colour. At this stage, the end point is reached.
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Determine the concentrations of solutions Determine the percentage purity or molar mass of an acid or base Deducing the equation for a neutralisation reaction Determine the amount of water of crystallisation in a hydrated salt.
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Determine the concentration of a reactant of unknown concentration by reacting it with an excess volume of another reactant of known concentration. The resulting mixture is then titrated, taking into account the excess of reagent which is present. Back tittrations are used for insoluble sample.
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Translate the mass or volume (of gas) of a given reactant into an amount (mol). Use the stoichiometric ratio from the balanced equation to deduce the amount (mol) of the required reactant or product. Reconvert to a mass, volume (for a gas), concentration (moldm -3 or gdm -3 ) or percentage purity.
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