AQA A-LEVEL CHEMISTRY AROMATIC
CHEMISTRY QUIZZES WITH ANSWERS.
What's,the,formula,for,benzene?,,,ANS,-C6H6
Why,does,benzene,have,a,ring,of,delocalised,electrons?,,,ANS,-
1.,Each,carbon,atom,is,bonded,to,two,other,carbon,atoms,and,a,hydrogen,atom,and,so,has,a,spare,electro
n,which,exists,in,a,P,orbital,which,overlap,with,each,other.
2.,The,electron,is,delocalised,and,so,can,move,throughout,the,p,orbitals,
3.,This,creates,a,ring,of,electron,density,above,and,below,the,carbon.
Describe,the,bonding,in,benzene.,,,ANS,-1.,Sigma,bonds,between,each,overlapping,c-c,bond
2.,Pi,bonds,between,adjacent,p,orbitals
State,the,three,problems,with,Kekule's,structure,,,ANS,-
1.,C=C,bonds,are,actually,all,the,same,length,rather,than,the,predicted,3,long,single,bonds,and,3,short,dou
ble,bonds.,
2.,Benzene,doesn't,undergo,addition,reactions,which,you,would,expect,trienes,to,readily,undergo
3.,Enthalpy,change,of,hydrogenation,is,152,kJ,mol-1,less,than,expected.
What,are,arenes?,,,ANS,-Hydrocarbons,based,on,benzene
Why,do,arenes,have,high,melting,points?,,,ANS,-Due,to,high,stability,of,delocalised,ring
Why,do,arenes,have,low,boiling,points?,,,ANS,-They,are,non-
polar,and,so,often,cannot,be,dissolved,in,water
State,the,two,important,factors,for,the,reactivity,of,aromatic,compound,,,ANS,-
1.,Ring,is,an,area,of,high,electron,density,and,so,is,attacked,by,electrophiles,
2.,Aromatic,ring,is,very,stable,and,so,requires,lots,of,delocalisation,energy,to,break,it
This study source was downloaded by 100000899564701 from CourseHero.com on 06-11-2025 12:43:42 GMT -05:00
https://www.coursehero.com/file/246857774/AQA-A-LEVEL-CHEMISTRY-AROMATIC-CHEMISTRY-QUIZZES-WITH-ANSWERSpdf/
CHEMISTRY QUIZZES WITH ANSWERS.
What's,the,formula,for,benzene?,,,ANS,-C6H6
Why,does,benzene,have,a,ring,of,delocalised,electrons?,,,ANS,-
1.,Each,carbon,atom,is,bonded,to,two,other,carbon,atoms,and,a,hydrogen,atom,and,so,has,a,spare,electro
n,which,exists,in,a,P,orbital,which,overlap,with,each,other.
2.,The,electron,is,delocalised,and,so,can,move,throughout,the,p,orbitals,
3.,This,creates,a,ring,of,electron,density,above,and,below,the,carbon.
Describe,the,bonding,in,benzene.,,,ANS,-1.,Sigma,bonds,between,each,overlapping,c-c,bond
2.,Pi,bonds,between,adjacent,p,orbitals
State,the,three,problems,with,Kekule's,structure,,,ANS,-
1.,C=C,bonds,are,actually,all,the,same,length,rather,than,the,predicted,3,long,single,bonds,and,3,short,dou
ble,bonds.,
2.,Benzene,doesn't,undergo,addition,reactions,which,you,would,expect,trienes,to,readily,undergo
3.,Enthalpy,change,of,hydrogenation,is,152,kJ,mol-1,less,than,expected.
What,are,arenes?,,,ANS,-Hydrocarbons,based,on,benzene
Why,do,arenes,have,high,melting,points?,,,ANS,-Due,to,high,stability,of,delocalised,ring
Why,do,arenes,have,low,boiling,points?,,,ANS,-They,are,non-
polar,and,so,often,cannot,be,dissolved,in,water
State,the,two,important,factors,for,the,reactivity,of,aromatic,compound,,,ANS,-
1.,Ring,is,an,area,of,high,electron,density,and,so,is,attacked,by,electrophiles,
2.,Aromatic,ring,is,very,stable,and,so,requires,lots,of,delocalisation,energy,to,break,it
This study source was downloaded by 100000899564701 from CourseHero.com on 06-11-2025 12:43:42 GMT -05:00
https://www.coursehero.com/file/246857774/AQA-A-LEVEL-CHEMISTRY-AROMATIC-CHEMISTRY-QUIZZES-WITH-ANSWERSpdf/
