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: '''Condensation polymerisation''' [[Chemical Reaction|reaction]]s are called '''condensation''' [[Chemical Reaction|reactions]] because they usually [[product|produce]] [[Water]], but they may also [[Product|produce]] other small [[molecule]]s such as HCl.
: '''Condensation polymerisation''' [[Chemical Reaction|reaction]]s happen commonly in biological [[organism]]s.
===Examples===
====Forming Polyesters====
: '''Condensation polymerisation''' [[Chemical Reaction|reactions]] which [[product|produce]] [[Water]] can happen when one end of a [[molecule]] carries an -OH [[Functional Group|group]] while the other end carries a -COOH [[Functional Group|group]]. These [[Chemical Reaction|react]] together joining the [[molecule]]s forming a [[Polyester]].
: '''Condensation polymerisation''' [[Chemical Reaction|reactions]] which [[product|produce]] [[Water]] can also happen when one [[molecule]] carries two -OH [[Functional Group|groups]] at either end of the [[molecule]] while the other [[molecule]] carries two -COOH [[Functional Group|groups]]. These two [[molecule]]s [[Chemical Reaction|react]] together joining the [[molecule]]s forming a [[Polyester]] and [[product|producing]] [[Water]].
{| class="wikitable"
|-
|[[File:StructuralDiagramEthandioateEthandiol.png|center|200px]]
|[[File:ArrowRight.png|center|200px]]
|[[File:StructuralDiagramPolyester.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |Ethandioate and Ethandiol can [[Chemical Reaction|react]] together in a '''Condensation Polymerisation'''.
|
| style="height:20px; width:200px; text-align:center;" |A [[Polyester]] is formed along with [[Water]].
|}
====Forming Polysaccharides====
: The '''condensation polymerisation''' [[Chemical Reaction|reaction]] of [[monosaccharide]]s [[product|produces]] a [[polysaccharide]] and [[Water]].
: The [[monosaccharide]] [[glucose]] can [[Chemical Bond|bond]] in a '''condensation polymersiation''' [[Chemical Reaction|reaction]] to [[product|produce]] [[starch]] or [[glycogen]].
n x Monosaccharides → Polysaccharide + Water
n x Glucose → Starch + Water
Where 'n' represents an integer.
{| class="wikitable"
|-
|[[File:StructuralDiagramGlucose.png|center|200px]]
|[[File:ArrowRight.png|center|200px]]
|[[File:StructuralDiagramStarch.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |[[Glucose]] [[molecule]]s [[Chemical Reaction|react]] together in a '''condensation polymerisation''' [[Chemical Reaction|reaction]].
|
| style="height:20px; width:200px; text-align:center;" |[[Starch]] is formed along with [[Water]].
|}
====Forming Proteins (Higher)====: '''Condensation polymerisation''' [[Chemical Reaction|reactions]] of [[Peptide]]s ([[Amino Acid]]s ) [[product|produce]] [[Polypeptide]]s ([[Protein]]s) and [[Water]].
: Each [[Amino Acid]] has an NH<sub>2</sub> [[Functional Group|group]] which acts as a [[base]] and an -COOH [[Functional Group|group]] which acts as an [[acid]]. These [[Functional Group|functional groups]] [[Chemical Reaction|react]] to [[Product|produce]] [[Polypeptide]]s and [[Water]].
n x Peptides → Polypeptide + Water <chem>H2NCH2COOH + H2NCH2COOH nH2NCH2COOH -> H2NCH2COONHCH2COOH (-HNCH2CO-) + H2OnH2O</chem> Where 'n' represents an integer. {| class="wikitable"|-|[[File:StructuralDiagramGlycine.png|center|200px]]|[[File:ArrowRight.png|center|200px]]|[[File:StructuralDiagramPolyglycine.png|center|200px]]|-| style="height:20px; width:200px; text-align:center;" |[[Glycine]] [[molecule]]s [[Chemical Reaction|react]] together in a '''condensation polymerisation''' [[Chemical Reaction|reaction]].|| style="height:20px; width:200px; text-align:center;" |A [[Polypeptide]] ([[Protein]]) is formed along with [[Water]]. In reality [[Polypeptide]]s are made of many different [[Peptide]]s ([[Amino Acid]]s) rather than the same one repeated.|} ====Edexcel==== :[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Condensation polymerisation, pages 188-189, GCSE Chemistry, Pearson, Edexcel '']