객관식
What is the missing reagent in the following reaction: reacts with aqueous to form ?
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3. Acids and Bases
Organic Chemistry Reactions
객관식
How many different mononitration products are formed when is treated with a mixture of concentrated and ?
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검증된 단계별 안내1
Identify the structure of m1-xylene, which is another name for meta-xylene. It is a benzene ring with two methyl groups attached at the 1 and 3 positions.
Determine the directing effects of the methyl groups during electrophilic aromatic substitution. Methyl groups are electron-donating and activate the ring, directing incoming substituents to the ortho and para positions relative to themselves.
Analyze the possible positions for nitration (introduction of a nitro group, -NO2) on the ring. Since the methyl groups are at positions 1 and 3, the available positions for substitution are 2, 4, 5, and 6.
Consider the combined directing effects of both methyl groups to identify unique substitution sites. Positions 2 and 6 are ortho to one methyl group and meta to the other, position 4 is para to one methyl group and meta to the other, and position 5 is meta to both methyl groups.
Count the distinct mononitration products by recognizing that substitution at positions 2 and 6 will give the same product due to symmetry, while substitutions at positions 4 and 5 give different products. Thus, the total number of different mononitration products corresponds to the number of unique substitution sites.
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