Practice Problem: Electrophilic Aromatic Substitution Rates

The video tutorial explains the bromination of aromatic compounds with different functional groups, focusing on drawing the resulting products and ranking the reactions by speed. It covers the directing capabilities of functional groups, such as halogens and hydroxyl groups, and their effects on regioselectivity and reaction kinetics. The tutorial also discusses the role of electron withdrawing and donating groups in stabilizing or destabilizing the arenium ion intermediate, affecting the reaction speed.

What is the primary focus when dealing with the bromination of aromatic compounds with different functional groups?

• Identifying the color change in the reaction

• Drawing the resulting products and ranking reaction speeds

• Measuring the temperature change

• Calculating the molecular weight of the products

Which of the following groups is an ortho para director despite being electron-withdrawing?

• Hydroxyl group

• Nitro group

• Halogen group

• Amino group

What is the directing nature of the nitro group in electrophilic aromatic substitution?

• Ortho para director

• Meta director

• Non-director

• Both ortho and meta director

How do electron-withdrawing groups affect the arenium ion intermediate in electrophilic aromatic substitution?

• They stabilize the intermediate

• They have no effect on the intermediate

• They destabilize the intermediate

• They convert the intermediate into a different ion

Which group is known to speed up the reaction by stabilizing the arenium ion intermediate?

• Nitro group

• Halogen group

• Hydroxyl group

• Carbonyl group