The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 76
Page 147
... mechanisms . Chemical Reactions , Mechanisms of ( J.A.Y. ) The mechanisms of chemical reactions are the detailed processes by which chemical substances are transformed into other substances . The reactions themselves may in- volve the ...
... mechanisms . Chemical Reactions , Mechanisms of ( J.A.Y. ) The mechanisms of chemical reactions are the detailed processes by which chemical substances are transformed into other substances . The reactions themselves may in- volve the ...
Page 151
... mechanisms . If , on the other hand , a covalent bond is formed by a pair of electrons , both of which come from one of the two reagents , the process may be described as coordina- tion , and its reverse is heterolysis . Coordination ...
... mechanisms . If , on the other hand , a covalent bond is formed by a pair of electrons , both of which come from one of the two reagents , the process may be described as coordina- tion , and its reverse is heterolysis . Coordination ...
Page 153
... mechanisms of substitution also are known to take place at particularly activated unsat- urated centres . For example : Ar - C ( Br ) CH2 -Br- + OEt- Ar - C + = CH2 → Ar - C ( OEt ) = CH2 in which the symbol Ar represents a benzene ...
... mechanisms of substitution also are known to take place at particularly activated unsat- urated centres . For example : Ar - C ( Br ) CH2 -Br- + OEt- Ar - C + = CH2 → Ar - C ( OEt ) = CH2 in which the symbol Ar represents a benzene ...
Other editions - View all
Common terms and phrases
acid activity addition administration appear atoms became become bonds called carbon cause central centre century charge Charles chemical chemistry Chess China Chinese combined common complete compounds containing continued cultural drugs early economic effect electrons elements energy established example Figure forces four give given groups hydrogen important increased industry involved ions Italy king known land later less literature living major mass materials ment metal methods molecular molecules move natural occur officials orbitals organic original party percent period play political population position possible present properties provinces reaction region remained represented result river rule separation social species structure substances successful temperature tion types United usually various