Question5 10 pts The use of Pyridinium Tribromide in the bromination of trans-st

Question

Question5 10 pts The use of Pyridinium Tribromide in the bromination of trans-stilbene has a lower atom economy shown in table 1 of the article The Evolution of a Green Chemistry Laboratory Experiment: Greener Brominations of Stilbene due to what factor? Pyridinium Tribromide has a greater molecular weight than HBr/H202 or Br2. It takes 2 moles of Pyridinium Tribromide to react with one mole of trans-stilbene compared to the single mole of Br2 that is required to react with one mole of trans-stilbene. Pyridinium Tribromide is ran in ethanol which is an organic solvent while bromination with hydrobromic acid with hydrogen peroxide is conducted in an aqueous medium

Explanation / Answer

Bromination of stilbene by HBr in presnce of H2O2 and solvent is water.

water is green solvent and environmentally beningn solvent.

so last option that means third option is the answer.

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