AL Chemistry Part 7 (Alkanes and Alkenes)[91I1a]1.(a) Using E, give reagents and a mechanism to explain what is meant by each of the following: A reaction obeying Markovnikoff’s rule. A polymerisation. (4 marks)[91II7a] 2. State with explanation, what you would ...
A trisubstituted alkene means that there are a total of three substituents attached to the carbons surrounding a double bond. Trisubstituted alkenes are more stable than disubstituted alkenes. What is the difference between monosubstituted and disubstituted? A monosubstituted alkene has only one carbon-ba...
Protonation of an alkene leads to the formation of alkoxides, which are more stable than the physisorbed species. As for physisorption a linear relation between the chemisorption energy and the carbon number is obtained. Protonation energies are independent of the carbon number but depend on the ...
There are two applications of this rea 23、ction:1.分開烷烴與烯烴的混合物Separation of a mixture of alkanes and alkenes烯烴能被濃硫酸吸收但烷烴卻不能。因此,當水與有機相分開後,便可藉著加熱得回純烯烴。An alkene can be absorbed by concentrated sulphuric acid whereas an alkane cannot. After ...
Alkenes are more reactive than alkanes Reason: presence of the C = C double bond alkenes undergo addition reactions and the reactions are exothermic Energetically favourable!! New Way Chemistry for Hong Kong A-Level Book 3A 23 30.5 Reactions of Alkenes (SB p.129) Electrons of bond are more...
Alkenes are more reactive than alkanes Reason: presence of the C = C double bond alkenes undergo addition reactions and the reactions are exothermic Energetically favourable!! 30.5 Reactions of Alkenes (SB p.129) Electrons of bond are more diffuse and less firmly held ...
Alkanes are saturated hydrocarbons, meaning that they have the maximum number of hydrogen atoms bonded to each carbon atom. The melting and boiling points of alkanes generally increase as the molecular size and complexity increase, rather than decrease down the group. Rate this question: 17 0 ...
However, the Krafft point and surface tension at the CMC of sodium 2-sulfoethyl alkanoates were lower than those of the sodium alkyl beta-sulfopropionates with the same number of carbon atoms. Sodium 2-sulfoethyl alkanoates are more stable than sodium alkyl beta-sulfopropionates in their ...
解析 (i)Another resonance structure can be obtained due to the delocalisation of the electron.secondary radical is more stable than primary radical as it has more electron-donating group or CH_3CH=CHCH_2→CH_3CH-CH=CH_2(ii)They are constitutional /positional isomers. 反馈 收藏 ...
3. The location of substituents like alkanes. 4. When C number is over 8、10: 称某碳烯称某碳烯 CH3(CH2)3CH CH(CH2)4CH3 5-Undecene5-十一碳烯十一碳烯 CC CH3CH2 CH3CH2CH2 H H 2-Ethyl-1-pentene CH3 CH3 4,4-Dimethylcycloheptene Alkenyl groups(烯基)(烯基): Vinyl (乙烯基)(乙烯...