Lesson Worksheet: Chemical Disposal Chemistry

In this worksheet, we will practice categorizing waste, identifying hazardous and incompatible waste, and selecting safe waste disposal methods.


Which of the following could not be disposed of as aqueous organic waste?

  • AEthanol
  • BToluene
  • CAcetone
  • DAcetonitrile
  • EDiethyl ether


Which of the following materials would be disposed of as halogenated organic waste?

  • AHydrochloric acid
  • BTin(IV) chloride
  • CAcetyl chloride
  • DChloroform
  • EChlorine


After washing a reaction mixture, separation into aqueous and organic layers is not observed. Which of the following is not a possible cause?

  • AThe ionic strength is too low.
  • BThe temperature is too high.
  • CToo little water has been added.
  • DThe separation is slow.
  • ESurfactant is present.


Which of the following chemical classes is waste compatible with mineral acids such as hydrochloric acid?

  • ACyanides
  • BAlkalis
  • CSulfides
  • DOrganic acids
  • ESulfates


Which of the following would be most hazardous if added to nonhalogenated organic solvent waste?

  • ABrine
  • BChloroform
  • CDimethyl sulfoxide
  • DHydrochloric acid
  • ENitric acid


Which of the following can not be diluted and disposed of as nonhazardous aqueous waste?

  • ASodium hydroxide
  • BCopper(II) chloride
  • CCalcium chloride
  • DEthanol
  • ENitric acid


Which of the following is miscible with water?

  • ADichloromethane
  • BCyclohexane
  • CMineral oil
  • D1-Hexanol
  • EIsopropanol


Which of the following statements is false?

  • AAcids and bases should not be placed in steel containers.
  • BSome aqueous chemical waste can be disposed of in the sink.
  • CWaste bottles should be stored in vented cupboards.
  • DWaste bottles should be tightly sealed.
  • EWaste bottles should be filled via a funnel.

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