Difference between revisions of "Titration"
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
| + | [[File:Titration.png|right|300px|thumb|A [[diagram]] showing the setup for a [[titration]].]] | ||
[[Titration]] is an [[Experimental Technique|experimental technique]] used to [[measure]] the exact [[Volume (Space)|volume]]s of [[acid]] and [[alkali]] needed to have a complete [[Neutralisation]] [[Chemical Reaction|reaction]]. | [[Titration]] is an [[Experimental Technique|experimental technique]] used to [[measure]] the exact [[Volume (Space)|volume]]s of [[acid]] and [[alkali]] needed to have a complete [[Neutralisation]] [[Chemical Reaction|reaction]]. | ||
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#Wash the [[Volumetric Pipette|volumetric pipette]] and [[burette]] with [[Distilled Water|distilled water]] then wash the [[Volumetric Pipette|volumetric pipette]] with the [[alkali]] and the [[burette]] with the [[acid]] to avoid contamination from previous [[experiment]]s. | #Wash the [[Volumetric Pipette|volumetric pipette]] and [[burette]] with [[Distilled Water|distilled water]] then wash the [[Volumetric Pipette|volumetric pipette]] with the [[alkali]] and the [[burette]] with the [[acid]] to avoid contamination from previous [[experiment]]s. | ||
#Measure and record a fixed [[Volume (Space)|volume]] of [[alkali]] using the [[Volumetric Pipette|volumetric pipette]]. | #Measure and record a fixed [[Volume (Space)|volume]] of [[alkali]] using the [[Volumetric Pipette|volumetric pipette]]. | ||
| − | #Add the [[alkali]] to a [[ | + | #Add the [[alkali]] to a [[Conical Flask|conical flask]] and then add a few drops of [[pH Indicator]]. |
#Fill the [[burette]] with [[acid]]. | #Fill the [[burette]] with [[acid]]. | ||
| − | #Add the [[acid]] to the [[alkali]] one drip at a time, swirling the [[ | + | #Add the [[acid]] to the [[alkali]] one drip at a time, swirling the [[Conical Flask|conical flask]] constantly to mix the [[reactant]]s thoroughly. |
#Repeat until the [[pH Indicator]] shows the [[solution]] is [[Neutral (Chemistry)|neutral]]. | #Repeat until the [[pH Indicator]] shows the [[solution]] is [[Neutral (Chemistry)|neutral]]. | ||
| − | #Record the [[Volume (Space)|volume]] of [[acid]] added to the [[ | + | #Record the [[Volume (Space)|volume]] of [[acid]] added to the [[Conical Flask|conical flask]]. |
#Repeat the [[experiment]] at least 3 times to produce an [[Mean Average|average]]. | #Repeat the [[experiment]] at least 3 times to produce an [[Mean Average|average]]. | ||
Revision as of 14:33, 13 January 2019
Key Stage 4
Meaning
Titration is an experimental technique used to measure the exact volumes of acid and alkali needed to have a complete Neutralisation reaction.
About Titration
- During a titration one of the solutions is a fixed volume and the other is is added as needed and measured as precisely and accurately as possible.
- To obtain a fixed volume a Volumetric Pipette is used.
- To measure the volume being added a Burette is used.
Method
For a fixed volume of alkali and a measured volume of acid.
- Wash the volumetric pipette and burette with distilled water then wash the volumetric pipette with the alkali and the burette with the acid to avoid contamination from previous experiments.
- Measure and record a fixed volume of alkali using the volumetric pipette.
- Add the alkali to a conical flask and then add a few drops of pH Indicator.
- Fill the burette with acid.
- Add the acid to the alkali one drip at a time, swirling the conical flask constantly to mix the reactants thoroughly.
- Repeat until the pH Indicator shows the solution is neutral.
- Record the volume of acid added to the conical flask.
- Repeat the experiment at least 3 times to produce an average.