Question
. The table shows the names or structures of organic compounds P to U.
(a) Give the letters of the organic compounds, P to U, that are unsaturated hydrocarbons.
(b) Describe the test for an unsaturated hydrocarbon.
test ……………………………………………………………………………………………………………………………
observations ………………………………………………………………………………………………………………
(c) But-1-ene is an unbranched molecule.
(i) Name the unbranched isomer of but-1-ene.
(ii) Draw the structure
(d) Dodecane is an alkane with 12 carbon atoms. Dodecane can be cracked.
(i) Write the formula of dodecane.
(d) Dodecane is an alkane with 12 carbon atoms. Dodecane can be cracked.
(i) Write the formula of dodecane.
(e) Name the reagent and suggest the conditions needed to convert organic compound U into
organic compound S.
reagent ……………………………………………………………………………………………………………………..
conditions ………………………………………………………………………………………………………………….
(f) Organic compound S can be converted to organic compound Q by reaction with an acidified
reagent.
(i) Name the type of chemical change that happens to organic compound S.
(ii) Name the acidified reagent added to organic compound S.
(g) Organic compound T is made by reacting two compounds together.
(i) Name the homologous series that organic compound T belongs to.
(ii) Name the two compounds which react together to make organic compound T.
Draw the structures of each compound you have named. Show all of the atoms and all of
the bonds.
name …………………………………………………………………………………………………………………..
structure
name …………………………………………………………………………………………………………………..
structure
(iii) Deduce the molecular formula of organic compound T.
Answer/Explanation
Answer:
(a) R and U only
(b) aqueous bromine (1)
(c) (i) but-2-ene
(ii) structure of methyl propene
(d) (i) \(C_{12}H_{26}\)
(ii) P, R and U
(e) steam (1)
catalyst (1)
One other condition (1):
either 60 atm or 300 °C
(f) (i) oxidation
(ii) potassium manganate (VII)
(g)(i) ester
(ii) 
(iii) \(C_5H_{10}O_2\)