Relative Rates of Electrophilic Aromatic Bromination

Purpose To evaluate the relative reactivities of different arenes in electrophilic aromatic bromination. 

Bromine is a hazardous chemical that may cause serious chemical burns. Do not breathe its vapors or allow it to come into contact with your skin. Perform all operations involving the transfer of the pure liquid or its solutions in a hood and wear latex gloves for these manipulations. Even though the solutions used in the experiments are dilute, take proper precautions. If you get bromine on your skin, wash the area immediately wUh soap and warm water and soak any affected area in 0.6 Af sodium thiosulfate solution, for up to 3 h if the burn is particularly serious. 

Do not use your mouth to fill pipets when transferring any of the solutions in this experiment this applies to both the bromine solutions and the acetic acid solutions of the substrates. 

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