Chemistry of Detergents and Surfactants in the Environment
Chemistry ⇒ Environmental Chemistry
Chemistry of Detergents and Surfactants in the Environment starts at 10 and continues till grade 12.
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See sample questions for grade 12
A sample of river water contains 0.5 mg/L of a non-biodegradable surfactant. If the safe limit is 0.2 mg/L, by what factor does the sample exceed the safe limit?
Describe one method for removing surfactants from wastewater.
Describe one way in which surfactants can enter the environment.
Describe the environmental impact of phosphates in detergents.
Describe the role of surfactants in oil spill remediation.
Describe the structure of a typical surfactant molecule.
Explain how detergents can affect the oxygen levels in aquatic environments.
Explain the difference between primary and secondary biodegradation of surfactants.
Explain the term 'eutrophication' in the context of detergent pollution.
Explain why biodegradable detergents are preferred over non-biodegradable detergents from an environmental perspective.
Explain why cationic surfactants are less commonly used in household detergents than anionic surfactants.
Explain why the use of phosphate-free detergents is promoted in many countries.
State one reason why branched-chain alkylbenzene sulfonates are less environmentally friendly than linear-chain alkylbenzene sulfonates.
What is the primary function of surfactants in detergents?
