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Unformatted text preview: warm the mixture briefly with a warm-water bath and swirl the flask to mix the reagents. 3. Explain why 4-nitrobromobenzene predominates in the product mixture. 4. Why is dinitration not a significant process under the conditions used ? 5. What is the function of the concentrated sulfuric acid in this experiment ? 6. Why is the reaction flask shaken frequently during the addition of the bromobenzene to the acid mixture? 7. Is the nitration reaction exothermic or endothermic ? 8. What compounds are present in the aqueous solution from which the bromobenzene isomers are filtered? 9. Why is the p-isomer of the product less soluble in ethanol than the o-isomer ? 10. Explain the theory of TLC....
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- Spring '11