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In an acid-base titration for the reaction HCl + NaOH -> H2O + NaCl the equivalence point is when the hydrochloric acid and sodium hydroxide neutralise each other in equimolar proportions. When one mole of HCl is added to one mole of NaOH then equivalence point is reached.
The 'end point' in a titration is when the indicator changes to the neutral colour (e.g. green) and this is usually an approximation of where the equivalence point is.
As a result, we can deduce concentrations of unknown substances if we know the stoichiometric numbers of in the chemical reaction (i.e. 1HCl) and have a substance of known concentration react the unknown with.
Rubye Mante
Wiki User
∙ 9y agoThe definition of an equivalence point is when the analyte solution is neutralized. It is also known as the stoichiometric point and is part of a chemical reaction.
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