Materials

• Student tray containing the following:
  • 3 test tubes (1 small for Part A, 2 large for Part C)
  • 1-10 mL graduated cylinder
  • 1-250 mL beaker
  • 1-400 mL beaker (labeled “Waste”)
  • 2.5M NaOH (~10 mL needed per group)
  • 5.0M HCl (50 ml needed per group)
  • Methyl orange indicator
  • Calcium turnings
  • DI Water
  • Beaker with disposable items: pipettes, scoopula, small weigh boat, Parafilm
  • Container of glassware soap and a brush
  • Label tape
  • Litmus Paper
  • White paper
  • Test Tube rack OR large beaker
• Balance

Safety and Notes

*It is important to follow the safety guidelines below while performing this lab.

• Always review MSDS (Safety Data Sheet) information for all chemicals you will be working with before coming to class.
• Sodium hydroxide is caustic. If it gets on your skin, flush with copious amounts of water and inform your instructor.
• HCl is a strong acid. If you get any on your skin flush the area immediately with water and inform your instructor.
• All chemicals must be capped tightly when not in use.
• Use appropriate equipment to handle acids, bases, and wear safety equipment.
• Make sure you properly label (chemical name, concentration, date prepared & initials of preparer) all prepared solutions with labeling tape and sharpie even if you will be disposing of solutions.
• Do not stand directly over any reaction. Do not inhale any vapors released from reactions.
• All waste may be disposed of in container labeled “Chem 111 Waste.”
• Return all materials to trays and drawers in a clean orderly condition for the next class.