Palladium acts as a heterogeneous catalyst in the reaction between an alkene with hydrogen by providing an alternative reaction route. Describe the stages of this reaction route. (3 marks)

The detail required for many A-level questions is indicated in the number of marks available. As this question awards 3 marks, 3 separate points must be made. For example, the first stage of a heterogeneous reaction usually involves mass transfer and adsorption of the reactant on surface active sites. Secondly, the bonds in the reactant molecule are weakened, allowing a surface reaction to take place. Lastly, the product is desorbed from the surface, and the active sites are free to adsorb another reactant molecule.

Related Chemistry A Level answers

All answers ▸

Which molecule has the highest boiling point: methane, ammonia, water or hydrogen fluoride? Explain why.


What is optical isomerism and how can you distinguish between optical isomers?


Explain how a coordinate bond forms


Describe how you could distinguish between ethanol, ethanoic acid, ethyl bromide and 2-methylpropan-1-ol.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences