Q.State the central idea behind green chemistry as a strategy for preventing pollution rather than treating it after the fact, and give one real example of a chemical process or product that has been made 'greener'.
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Start your 14-day free trial to unlock the full solution →Green chemistry's central idea is to design chemical products and processes that avoid generating hazardous waste and pollution in the first place, rather than treating waste after it has already been produced -- 'pollution prevention at the source, not pollution control after the fact.' This is achieved through choices such as maximising atom economy (so more of the starting material ends up in the useful product rather than as waste), replacing hazardous solvents with safer or solvent-free alternatives, and selecting less toxic starting materials and products. A widely cited real-world example is the replacement of chlorine-based bleaching in the paper and pulp industry with hydrogen peroxide (). Chlorine bleaching generates persistent, toxic chlorinated organi …
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