Table of Contents
How does cyclohexane react with bromine?
Cyclohexane has no pi-unsaturation and is therefore not nucleophilic. It does not react with bromine unless energy in the form of light or heat is applied. In such a case a free-radical substitution reaction occurs. A small amount of the ortho substituted product is also obtained from the bromination of anisole.
What type of reaction occurs between hexane and bromine?
Reaction between bromine and hexane Thus, the bromine reacted with hexane to form a colorless product, bromohexane, and hydrobromic acid: C_6H_{12}+Br_2 \; \rightarrow \; C_6H_{11}Br + HBr An H atom from hexane was replaced with a bromine atom: This is a substitution reaction.
Does cyclohexene react with bromine water?
Cyclohexene will react quickly and spontaneously with bromine water, and bromine water will be decolourised from brown to colourless.
What Colour is bromine dissolved in cyclohexane?
Analysis of results – Trial results
| Halogen | Colour of upper organic layer after shaking with hydrocarbon solvent |
|---|---|
| bromine | aqueous: yellow-orange to colourless cyclohexane: colourless to pale yellow-orange |
| Iodine | aqueous: brown to colourless cyclohexane: colourless to pink/purple |
What type of reaction is bromine water and alkene?
The bromine water turns colourless confirming the presence of an alkene. The bromine atoms break the carbon–carbon double bond and from C–Br bonds. This type of reaction is called an addition reaction and the addition of bromine to an alkene is called bromination.
Why does cyclohexane react with bromine water?
This means that Cyclohexene is able to induce a tempoary dipole in Br-Br molecules and this allows one Br to attract an electron pair from the double bond, leading to bromination of the cyclohexene into 1,2-bromocyclohexane.
What type of reaction may happen when bromine Br2 reacts with cyclopentane?
Question: When cyclopentane is exposed to Br2 in the presence of light, a halogenation reaction occurs. Write the formulas of: All possible products containing only one bromine. Draw the molecule(s).
Why cyclohexene can react with bromine?
How do you add bromine to cyclohexane?
Procedure
- Fill 1 cylinder 1/2 full with cyclohexane and fill the other 1/2 full with cyclohexene.
- Add bromine solution to both cylinders. Bromine adds across the double bond of cyclohexene forming a clear solution of trans-1,2-Dibromocyclohexane. The cylinder containing cyclohexane remains colored.
Does cyclohexane undergo addition reaction?
This sequence demonstrates that alkanes and benzene do not react with bromine in the absence of a catalyst. Alkenes like cyclohexene undergo addition reactions with bromine to produce dibromoalkanes.