Final answer:
Laboratory waste must be disposed of according to the type of waste and local regulations. Organic solvents like chloroform, acids such as hydrochloric acid, and strong bases like sodium hydroxide should be placed in specific chemical waste containers. Broken glass has its own container, and all disposals should be supervised by a teacher.
Step-by-step explanation:
Proper disposal of laboratory waste is crucial for safety and environmental protection. Here's a guideline for disposing of the listed materials:
- Chloroform (organic solvent) - This is a hazardous waste and should be disposed of in a chemical waste container designated for organic solvents.
- Used pH paper - Typically, used pH paper can go into the trash unless contaminated with hazardous material, in which case it should go to the chemical waste container.
- Hydrochloric acid solution - Acid waste should not be poured down the drain. It should be neutralized, if required by your local regulations, and then disposed of in a chemical waste container for acids.
- Used paper towels - If these are contaminated with hazardous substances, they should go to the chemical waste container; if not, they may be thrown in regular trash.
- Broken Glass - Should be placed in a sharps container or a designated broken glass container to prevent injury.
- Non-water soluble liquids - These should be disposed of in a chemical waste container intended for non-aqueous waste.
- Sodium hydroxide solution - As a strong base, this should be neutralized as per local regulations and disposed of in a chemical waste container for bases.
Remember to always consult with your teacher for specific disposal instructions and to wash your hands after handling any materials, as some may be hazardous. For accidents, chemical spills, or uncertainty regarding waste disposal, immediately notify your teacher.