It is an electrophilic aromatic substitution lab where we prepared 1-chloro-2,4-dinitrobenzene using chlorobenzene, nitric acid and sulfuric acid.

-Write an equation showing the role of sulfuric acid in the nitration reaction. H2SO4 pKa = -3; HNO3 pKa = -1.64

- Compare the 1H NMR spectra of the product with those of probable byproducts. Assign the resonances to particular H-atoms and explain your assignment. Compare the IR- spectra of chlorobenzene and your product. Note any significant changes.

- How does the introduction of two nitro groups into chlorobenzene allow nucleophilic aromatic substitution?

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