1. Assume you began with 5.2 mL of bromobenzene, calculate how many moles of the

ID: 981526 • Letter: 1

Question

1. Assume you began with 5.2 mL of bromobenzene, calculate how many moles of the compound you will use.

2. If you synthesized 6.09 grams of p-bromonitrobenzene, how many mmoles of bromobenzene did you start with? (Assume 100% conversion)

3. What is the function of the nitronium ion in the synthesis of 1-bromo-2,4-dinitrobenzene as shown below?

a) The nitronium ion acts as the electrophile.

b) The nitronium ion acts as the catalyst.

c) The nitronium ion acts as the activating group.

d) The nitronium ion acts as the nucleophile.

Br Br Br NO2 NO2 No2 NO2 NO2

1) 5.2 mL of bromobenzene (molar mass: 157.0079g/mol, density: 1.5 g/cm3) is 7.8 gm and 0.04968 moles.

2) 6.09 grams of p-bromonitrobenzene is 0.03029 moles. So, if the conversion is 100%, I had begun with 30.29 mmoles of bromobenzene.

3) The nitronium ion acts as the electrophile

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