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What is the chromatographic behavior comparison of methyl benzoate and nitric acid in the presence of...

What is the chromatographic behavior comparison of methyl benzoate and nitric acid in the presence of sulfuric acid to form methyl m-nitrobenzoate?

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Answer #1

methyl benzoate + HNO3/H2SO4 .....> methyl m-nitrobenzoate

here product is methyl m-nitrobenzoate.

product methyl m-nitrobenzoate contains polar -NO2 group which is absent in reactant methyl benzoate.

we know, with increasing the polarity of compound , intercaction between stationary phase and the compound increases. so elluting power decreses.

so here product is more polar than reactant. so Rf value of product is lower than reactant.

If reaction mixture contains some amount of reactant then methyl benzoate separted first then product.

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