Worksheet: Chemical Disposal

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

Q1:

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

  • AEthanol
  • BToluene
  • CAcetone
  • DAcetonitrile
  • EDiethyl ether

Q2:

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

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

Q3:

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.

Q4:

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

  • ACyanides
  • BAlkalis
  • CSulfides
  • DOrganic acids
  • ESulfates

Q5:

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

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

Q6:

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

Q7:

Which of the following is miscible with water?

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

Q8:

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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