CIE A Level Chemistry复习笔记3.3.4 SN1 & SN2
Halogenoalkanes: SN1 & SN2 Mechanisms In nucleophilic substitution reactions involving halogenoalkanes, the halogen atom is replaced by a nucleophile These reactions can occur in two different ...
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CIE A Level Chemistry复习笔记3.3.3 Elimination Reactions of Halogenoalkanes
Halogenoalkanes: Elimination Reactions In an elimination reaction, an organic molecule loses a small molecule In the case of halogenoalkanes this small molecule is a hydrogen halide (eg. HCl) The h...
CIE A Level Chemistry复习笔记3.3.2 Substitution Reactions of Halogenoalkanes
Nucleophilic Substitution Reactions of Halogenoalkanes Halogenoalkanes are much more reactive than alkanes due to the presence of the electronegative halogens The halogen-carbon bond is polar causi...
CIE A Level Chemistry复习笔记3.3.1 Production of Halogenoalkanes
Production of Halogenoalkanes: Substitution & Addition Reactions Halogenoalkanes are alkanes that have one or more halogens They can be produced from: Free-radical substitution of alkanes Elect...
CIE A Level Chemistry复习笔记3.2.11 Markovnikov's Rule
Alkenes: Stability of Cations & Markovnikov's Rule Carbocations are positively charged carbon atoms with only three covalent bonds instead of four There are three types of carbocations: primary...
CIE A Level Chemistry复习笔记3.2.10 Electrophilic Addition of Alkenes
Alkenes: Electrophilic Addition The double bond in alkenes is an area of high electron density (there are four electrons found in this double bond) This makes the double bond susceptible to attack ...
CIE A Level Chemistry复习笔记3.2.9 Test for Unsaturation
Test for Unsaturation Halogens can be used to test if a molecule is unsaturated (i.e. contains a double bond) Br2(aq) is an orange or yellow solution, called bromine water and this is the halogen m...
CIE A Level Chemistry复习笔记3.2.8 Reactions of Alkenes
Reactions of Alkenes Alkenes are very useful compounds as they can undergo many types of reactions They can therefore be used as starting molecules when making new compounds Electrophilic addition ...
CIE A Level Chemistry复习笔记3.2.7 Production of Alkenes
Production of Alkenes: Elimination, & Dehydration Reactions & Cracking Alkenes can be made by a series of reactions including elimination, dehydration reactions and cracking Elimination rea...
