Difference between revisions of "Alkene Test"
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===About the Alkene Test=== | ===About the Alkene Test=== | ||
: The '''alkene test''' identifies [[Unsaturated Hydrocarbon|unsaturated hydrocarbons]]. | : The '''alkene test''' identifies [[Unsaturated Hydrocarbon|unsaturated hydrocarbons]]. | ||
| − | : The '''alkene test''' is done by adding them to [[Bromine Water]]. If the [[Bromine Water]] turns from orange to colourless, then an [[alkene]] is present. During this test the [[Bromine]] [[Chemical Reaction|react]]s with the [[alkene]] to form a [[Dibromoalkane]]. | + | : The '''alkene test''' is done by adding them to [[Bromine Water]]. If the [[Bromine Water]] turns from orange to colourless, then an [[Unsaturated Hydrocarbon|unsaturated hydrocarbon]], such as an [[alkene]] is present. During this test the [[Bromine]] [[Chemical Reaction|react]]s with the [[alkene]] to form a [[Dibromoalkane]]. |
: [[Ethene]] + [[Bromine]] → [[Dibromoethane]] | : [[Ethene]] + [[Bromine]] → [[Dibromoethane]] | ||
: <chem>C2H4 + Br2 -> C2H4Br2</chem> | : <chem>C2H4 + Br2 -> C2H4Br2</chem> | ||
Revision as of 10:36, 25 January 2019
Key Stage 4
Meaning
The Alkene Test is a technique to identify whether a hydrocarbon contains two Carbon atoms with a double bond to one another.
About the Alkene Test
- The alkene test identifies unsaturated hydrocarbons.
- The alkene test is done by adding them to Bromine Water. If the Bromine Water turns from orange to colourless, then an unsaturated hydrocarbon, such as an alkene is present. During this test the Bromine reacts with the alkene to form a Dibromoalkane.
- Ethene + Bromine → Dibromoethane
- <chem>C2H4 + Br2 -> C2H4Br2</chem>