Hydrogenation and Halogenation of an Alkene

Name this alkene

• (E)but-2-ene

• but-1-ene

• (Z)but-2-ene

• (E)prop-2-ene

This student has started balancing the equation for the complete combustion of hexene. How many moles of oxygen would be required?

• 7

• 8

• 9

• 10

Alkenes readily undergo addition reactions. In additions reactions....

• A small molecule such as H₂O or HCl is produced

• Only one product is produced.

• An unsaturated product is made

• A small group of atoms is lost

What type of reaction is shown?

• Polymerisation

• Bromination

• Hydrogenation

• Hydration

What type of reaction is shown?

• Polymerisation

• Hydrogenation

• Hydration

• Bromination

What would the conditions of this reaction be?

• Phosphoric acid catalyst

• Ni / H₂

• UV Light

• Room temperature

Tags

NGSS.HS-PS1-5

What are the reagents and conditions for the hydration of ethene?

• Cold Water and sulfuric acid

• Steam and phosphoric acid

• Nickel and hydrogen gas

• X₂ and RTP

When an alkane is added to bromine water it remains orange. Why?

• Bromine only reacts with saturated compounds

• Bromine only reacts with unsaturated compounds

How could the combustion of hexene and hexane be used to tell the two hydrocarbons apart?

• The hexane would burn for less time

• The hexene won't ignite as easily

• The hexene will burn less completely

• The hexane will undergo incomplete combustion.

What could be used as a reagent for the halogenation of an alkene?

• HX

• X₂

• H₂O

• NaX