Which of the following green chemistry strategies is used to minimise solvent waste?
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A.
Using excess petroleum-based solvents
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B.
Increasing the number of solvents used in reactions
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C.
Using water as a solvent in reactions
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D.
Disposing of solvents after a single use
Correct Answer:
C. Using water as a solvent in reactions
Explanation:
Green chemistry aims to reduce the environmental impact of chemical processes by designing more sustainable methods. One of the primary strategies for minimizing solvent waste is substituting hazardous or volatile organic solvents with more environmentally friendly alternatives. Using water as a solvent is a key green chemistry practice because it is non-toxic, non-flammable, abundant, and eliminates the waste associated with disposing of petroleum-based or synthetic chemical solvents. Therefore, employing aqueous systems helps reduce the overall chemical footprint and waste generated during reactions.
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