Organic Chemistry: Question on Free Radical Substitution of Alkanes

In the previous blogpost, we have looked at the video on Free-Radical Substitution (FRS) mechanism of Alkanes which consists of three steps:

1. Initiation
2. Propagation
3. Termination

Through that video, you also understand that halogenation of alkanes via FRS is NOT a good method to obtain halogenoalkanes since the Extent and Position of Substitution is difficult to control.

In view that these concepts are commonly tested in GCE A-Level H2 Chemistry Examination and its equivalents, we shall look at an examination question and discuss the “Position of Substitution” concept via the video below.

Direct link: https://youtu.be/NlMDC-LOhPo

I hope you find the content easy for your understanding and if you have any questions, leave me a comment below. Feel free to share this blog post with your friends.

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Related Articles:

• Organic Chemistry: Free Radical Substitution Video
• Organic Chemistry: Key Concepts in Introductory Topics, Alkanes, Alkenes & Arenes
• Organic Chemistry: Halogenation of Benzene via Electrophilic Aromatic Substitution
• Organic Chemistry: Nitration of Benzene via Electrophilic Aromatic Substitution Reaction Mechanism
• Organic Chemistry: Electrophilic Addition of C2H4 with HBr and NaNO3(aq) Video

Sean Chua

Winners Education Centre Pte. Ltd.

Many know me as the Ten Year Series book author for JC A-Level H2 Chemistry and O-Level Pure Chemistry. My 19+ years of coaching experience (since 1999) with more than 1500 students from 180+ JCs and Secondary Schools has allowed me to understand the true reasons why students are not able to perform well in Chemistry. Most importantly, my strength lies in using everyday analogies (even grandmothers can understand!) to simplify abstract concepts. Also, my teaching methodology has been designed to be fun, enjoyable and effective for my students.

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