IGCSE Chemistry 0620/42/F/M/21 Q5a-d

Question

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

5 The table shows the names or structures of organic compounds P to U.
P Q R
H C
H
H
C
H
H
C
H
H
H propanoic acid but-1-ene
S T U
propan-1-ol methyl butanoate C C
H
C
H
H
H
H
H
(a) Give the letters of the organic compounds, P to U, that are unsaturated hydrocarbons.
……………………………………………………………………………………………………………………………. [2]

(b) Describe the test for an unsaturated hydrocarbon.
test ……………………………………………………………………………………………………………………………
observations ………………………………………………………………………………………………………………
[2]

(c) But-1-ene is an unbranched molecule.
(i) Name the unbranched isomer of but-1-ene.
……………………………………………………………………………………………………………………… [1]

(ii) Draw the structure of a branched isomer of but-1-ene. Show all of the atoms and all of the bonds.
[1]

(d) Dodecane is an alkane with 12 carbon atoms. Dodecane can be cracked.
(i) Write the formula of dodecane.
……………………………………………………………………………………………………………………… [1]

(ii) Give the letters of all the organic compounds, P to U, that can be formed when dodecane is cracked.
……………………………………………………………………………………………………………………… [2]

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    2022-07-05T13:58:31+08:00

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