1.5 Test

CHAINED UP ” “ ALL CHAINED

 Y12 Unit 1 Test Test 5 1.5 Introduction to Organic Chemistry Boa sorte! Name:…………………………………………..  Answer  Answer all questions questions Total 35 marks

SECTION A TOTA TOTAL L …………../2 ……… …../2 SECTION ! TOTAL TOTAL …………/"" TOTAL TOTAL ………………./35 ………… ……./35

# …………………..$ %ra&e '''''''''' 

0

SCTIO " 1.

T(e alkanes )orm an (omolo*ous series o) (+&ro,ar-ons. T(e )irst )our strai*(t,(ain alkanes are s(own -elow. met(ane et(ane 0ro0ane -utane 1a

1i

C C3C3 C3C2C3 C3C2C2C3

State w(at is meant -+ t(e term hydrocarbon. ................................................................................................................... ...................................................................................................................

1ii

%ie t(e *eneral )ormula )or t(e alkanes. ...................................................................................................................

1iii

%ie t(e mole,ular )ormula )or (e4ane t(e si4t( mem-er o) t(e series. ................................................................................................................... #

%$1-

Ea,( (omolo*ous series (as its own *eneral )ormula. State t&o ot(er ,(ara,teristi,s o) a (omolo*ous series. .............................................................................................................................. .............................................................................................................................. .............................................................................................................................. #2%

1,

!ran,(e&,(ain stru,tural isomers are 0ossi-le )or alkanes w(i,( (ae more t(an t(ree ,ar-on atoms. 1i

State w(at is meant -+ t(e term structural isomers. ................................................................................................................... ................................................................................................................... ...................................................................................................................

1ii

Name t(e t&o isomers o) (e4ane s(own -elow.  I s o m e r 1 C H H

3

C

C H

3

C H

2

C H

2

C H

3

1

Name .........................................................................................................  I s o m e r 2 C H H

3

C

3

C C H

C H

2

C H

3

3

Name .........................................................................................................

1iii

%ie t(e stru,tures o) t&o ot(er -ran,(e&,(ain isomers o) (e4ane. Isomer 3

Isomer 4

#'%

#Tota( 11 mar)s%

2.

1a

6our mem-ers o) t(e (omolo*ous series o) alkenes are et(ene 0ro0ene -ut"ene an& 0ent"ene. 1i

%ie one stru,tural )eature o) t(e ,om0oun&s t(at makes t(em mem-ers o) t(e (omolo*ous series o) alkenes. ................................................................................................................... ................................................................................................................... #1%

1ii

State t(e tren& in t(e -oilin* 0oints )rom et(ene to 0ent"ene. ................................................................................................................... #1%

 1-

T(ere are )ie stru,tural isomers o) t(e mole,ular )ormula C 5"7 w(i,( are alkenes. T(e *ra0(i,al )ormulae o) two o) t(ese isomers are *ien.

2

H

H

H

C

C

H

H H

H C

C

C

H

H

H

H

H

H

H

C

C

C

C

H

H

H

H

C

H

H

Isomer 1

Isomer 2

Draw the graphical formulae of

two of

the remaining alkene structural isomers.

Isomer $

Isomer *

#2%

1,

8raw t(e *ra0(i,al )ormulae o) three alkenes w(i,( (ae t(e )ormula C 9. Isomer 1

Isomer 2

Isomer $

#

%$ #Tota( + mar)s%

3

$.

1a

%ie t(e stru,tural )ormula o) 2-romo3met(+l-utane.

#1%

1-

T(ere are nine stru,tural isomers o) mole,ular )ormula C 9!r 2 t(ree o) w(i,( (ae -ran,(e& ,ar-on ,(ains. %ie t(e names an& &raw t(e *ra0(i,al )ormulae )or any t&o o) t(e -ran,(e& ,(ain isomers o) C 9!r 2. Name of isomer 1 ................................................................................................ Graphical formula of isomer 1

Name of isomer 2  ................................................................................................ Graphical formula of isomer 2 

#*%

1,

T(ere are ei*(t stru,tural isomers wit( t(e mole,ular )ormula C 5""!r. 6our o) t(ese are ,lasse& as 0rimar+ t(ree as se,on&ar+ an& one as tertiar+. 8raw t(e *ra0(i,al )ormula o) t(e tertiar+ ,om0oun& wit( mole,ular )ormula C5""!r. isomer B

 #1%  #Tota( ' mar)s%

4

SCTIO B 5.

1a

8raw t(e *ra0(i,al )ormula )or 0ent2ene. 1"

1-

8istin*uis( ,learl+ -etween t(e terms 0ositional ,(ain an& )un,tional isomerism. 1

1,

8raw t(e *ra0(i,al )ormula o) a 0ositional isomer a ,(ain isomer an& a )un,tional isomer o) 0ent2ene an& name t(em. 1

5