Chemistry 0620 · IGCSE · Alkenes

Alkenes — practice question

The table lists the names or structures of organic compounds P to U.
(a)[2]

Give the letters, from P to U, of the organic compounds that are unsaturated hydrocarbons.

(b)[2]

Describe the test for an unsaturated hydrocarbon. Include both the reagent and the observations.

(c(i))[1]

But-1-ene is a straight-chain molecule. Name the straight-chain isomer of but-1-ene.

(c(ii))[1]

Draw the structure for a branched isomer of but-1-ene. Include every atom and every bond.

(d(i))[1]

Write the formula for dodecane.

(d(ii))[2]

Give the letters, from P to U, of all the organic compounds that can be formed when dodecane is cracked.

(e)[3]

Name the reagent and state the conditions required to convert organic compound U into organic compound S.

(f(i))[1]

Name the type of chemical change that occurs to organic compound S.

(f(ii))[1]

Name the acidified reagent used with organic compound S.

(g(i))[1]

Name the homologous series to which organic compound T belongs.

(g(ii))[4]

Name the two compounds that react together to form organic compound T. Draw each compound you have named. Show all atoms and all bonds.

(g(iii))[1]

Deduce the molecular formula for organic compound T.

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