U2 AOS2 Chemistry Flashcards

Front

aliquot

Back

known, fixed volume delivered by a pipette

Front

analyte

Back

the solution of unknown concentration to go into the conical flask and be determined by titration

Front

average titre

Back

titre determined by averaging the results of several titrations

Front

concordant titres

Back

results of repeated titrations showing precision to be within ± 0.10 mL of each other

Front

end point

Back

the point at which the indicator just changes colour or the pH curve becomes vertical

Front

equivalence point

Back

point at which two reactants have reacted in their stoichiometric molar ratios in a titration as determined by a balanced equation

Front

meniscus

Back

the curved liquid surface in a tube caused by the hydrostatic properties of fluid with the walls of the glassware

Front

mole ratio

Back

represents the relative number of moles of each substance involved in the reaction

Front

primary standard

Back

substance used in volumetric analysis that is of such high purity and stability that it can be used to prepare a solution of accurately known concentration

Front

repeated measurements

Back

precision between the results of successive measurements of the same quantity being measured, carried out under the same conditions of measurement