Reactions in Chemsitry

HideShow resource information
Combustion
Combustion reactions always involve molecular oxygen O2. Anytime anything burns (in the usual sense), it is a combustion reaction. Combustion reactions are almost always exothermic (i.e., they give off heat).
1 of 13
Hydrogenation of an Alkene
In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane. (150/ Nickel Catalyst)
2 of 13
Hydration of an Alkene
Hydration of an alkene is used to make alcohols. By directly adding water to the carbon-carbon double bond. (300'C/phosphoric acid/60-70 atm)
3 of 13
Halogenation of an Alkene
Halogenation is the replacement of one or more hydrogen atoms in an organic compound by a halogen (fluorine, chlorine, bromine or iodine). The process is Nucleophilic addition. (Heterolytic fission)
4 of 13
Esterification
When a carboxylic acid is treated with an alcohol and an acid catalyst, an ester is formed (along with water). This reaction is called the Fischer esterification.
5 of 13
Oxidation of an Alcohol
Alcohols can be oxidized to either aldehydes, carboxylic acids or ketones depending on the reaction conditions. 1'' alcohol → Carboxylic acid. 2'' alcohol → Ketone. 3'' alcohol → No reaction. (Potassium Dichromate)
6 of 13
Electrophilic Substituion
Electrophilic substitution reactions are chemical reactions in which an electrophile displaces a functional group in a compound, which is typically, but not always, a hydrogen atom.
7 of 13
Dehydration of an Alcohol
The dehydration reaction of alcohols to generate alkene proceeds by heating the alcohols in the presence of a strong acid, such as sulfuric or phosphoric acid, at high temperatures. 1° alcohols: 170° - 180°C 2° alcohols: 100°– 140 °C 3° alcohols: 25°
8 of 13
Reduction
Reduction is chemical reaction that involves the gaining of electrons by one of the atoms involved in the reaction.
9 of 13
Oxidation
Oxidation is the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
10 of 13
Free Radical substitution
When a dihalide is split using UV light so they react with alkenes to form haloalkanes. There are three stages that involve In free radical substitution: initiation, propagation and termination.
11 of 13
Addition of Hydrogen Halides
This reaction happens through electrophilic addition where a hydrogen halide reacts with an alkene.
12 of 13
Addition Polymerization
An addition reaction is one in which two or more molecules join together to give a single product. During the polymerisation of ethene, thousands of ethene molecules join together to make poly(ethene) - commonly called polythene.
13 of 13

Other cards in this set

Card 2

Front

In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane. (150/ Nickel Catalyst)

Back

Hydrogenation of an Alkene

Card 3

Front

Hydration of an alkene is used to make alcohols. By directly adding water to the carbon-carbon double bond. (300'C/phosphoric acid/60-70 atm)

Back

Preview of the back of card 3

Card 4

Front

Halogenation is the replacement of one or more hydrogen atoms in an organic compound by a halogen (fluorine, chlorine, bromine or iodine). The process is Nucleophilic addition. (Heterolytic fission)

Back

Preview of the back of card 4

Card 5

Front

When a carboxylic acid is treated with an alcohol and an acid catalyst, an ester is formed (along with water). This reaction is called the Fischer esterification.

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Reactions resources »