English National Curriculum - Science
Mission Objectives
Describe how to perform a titration using strong acids and alkalis
Calculate the reacting volumes and concentrations in titrations (HT only)
Determine the concentration of a solution using titration data
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Words and meanings to learn
burette
a piece of laboratory equipment used to accurately measure and deliver a variable volume of a liquid, often used in titrations
pipette
a laboratory tool used to accurately measure and transfer a fixed volume of liquid, usually used to add a precise amount of acid or alkali in a titration
titration
a practical technique used to determine the concentration of an unknown acid or alkali by reacting it with a solution of known concentration
concentration
a measure of how much solute is dissolved in a given volume of solution, usually expressed in moles per cubic decimetre (mol/dm³) or grams per cubic decimetre (g/dm³)
phenolphthalein
an indicator used in titrations that is colourless in acidic solutions and turns pink in alkaline solutions, helping to identify the end point of the reaction
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Each pair/three students:
burette stand and holder, 50 cm3 burette, burette funnel (needs narrow neck to fit burette), 2 x 100 cm3 beakers, 25 cm3 pipette, pipette filler, white tile, wash bottle of deionised water, 250 cm3 conical flask, 0.050 mol/dm3, sulfuric acid (about 200 cm3 per student), 0.100 mol/dm3, sodium hydroxide (about 200 cm3 per student)
(Flexible with concentrations)
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