Back to the full dot-point answer
SingaporeChemistryQuick questions
Organic Chemistry
Quick questions on Arenes, benzene and electrophilic substitution: Singapore A-Level H2 Chemistry
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the structure of benzene?Show answer
Benzene, , is a planar, regular hexagon. Each carbon is hybridised and forms three sigma bonds (to two carbons and one hydrogen). The remaining p orbital on each carbon, perpendicular to the ring, overlaps sideways with its neighbours to form a continuous ring of delocalised pi electrons above and below the plane.
What is evidence for delocalisation?Show answer
The delocalised model is supported by three lines of evidence against the Kekule alternating-double-bond structure:
What is q1?Show answer
State two pieces of evidence for the delocalised structure of benzene. [2 marks]
What is q2?Show answer
Write the equation for the formation of the electrophile in the nitration of benzene. [1 mark]
What is q3?Show answer
State the reagents and catalyst for the chlorination of benzene, and name the product. [2 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.