Edexcel A-Level Chemistry AS 5.4 The Reactions of Alkenes Questions

Practise marked Edexcel IAL Chemistry questions on alkene reagents, conditions and products for hydrogenation, halogen, hydrogen-halide, steam and manganate(VII) reactions.

Exam points

State hydrogenation reagents and catalyst conditions for alkene reactions.
Identify reagents and conditions for halogen, hydrogen-halide, steam and manganate(VII) additions.
Draw or name the organic products formed when alkenes undergo addition reactions.

[Maximum number: 1]

This question is about alkenes.

Bisabolenes are a group of compounds found in plants and fungi. Bisabolene molecules contain several carbon-carbon double bonds.
5.51 g of $\alpha$ -bisabolene reacted with $1873 \mathrm{~cm}^{3}$ of hydrogen gas, $\mathrm{H}_{2}$ . The reaction occured at a temperature of $150^{\circ} \mathrm{C}$ and a pressure of 152000 Pa .
$\left[M_{\mathrm{r}}\right.$ value: $\quad \alpha$ -bisabolene $\left.=204.0\right]$

Deduce the number of carbon-carbon double bonds in a molecule of $\alpha$ -bisabolene, using your answers to (c)(i) and (c)(ii).

All question bank results loaded

Edexcel A-Level Chemistry AS 5.4 The Reactions of Alkenes Questions question 1