Physical properties
3 marks · Easy| Name | Number of Hydrogen atoms |
|---|---|
| Ethene | 4 |
| Butene | 8 |
| Alkene X | 12 |
(a)[2 marks]
For each compound, state its molecular formula.
(b)[1 mark]
Name alkene X.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) Ethene: C2H4; Butene: C4H8; Alkene X: C6H12 · must show all three correct
(b) hexene · must show correct IUPAC name (hexene)
Common mistakes: incorrect use of alkane formula; incorrect naming convention
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · C2H4 for Ethene; C4H8 for Butene
B2 (a) · 1 mark · C6H12 for Alkene X
B3 (b) · 1 mark · States hexene as the name for Alkene X
Worked solution
Ethene: C2H4, Butene: C4H8, Alkene X: C6H12
Alkene X has six carbon atoms (12 hydrogens, CnH2n), so its name is hexene.