Jove Lab Chem

Lab 45: Concentration Dependence — Materials List

Preparation for 10 Students

• Glass test tube (25 mm x 150 mm)
  5
• Test tube cleaning brush
  5
• Small stir bar
  5
• pH paper
  5 packages
• Long HCl-tolerant forceps
  5
• Lab tape
  5 rolls
• Stir plate (+1 for instructor)
  5
• Lab stand
  5
• Medium 3-prong or test tube clamp
  5
• Glass thermometer
  5
• Thermometer clamp
  5
• 100-mL glass beaker
  5
• 50-mL glass beaker
  5
• 600-mL glass beaker
  5
• 50-mm watch glass
  10
• 10-mL glass volumetric pipette
  5
• 5-mL glass volumetric pipette
  5
• Pipette controller
  5
• 20-mL volumetric flask
  5
• 10-mL glass graduated cylinder
  5
• Stopwatch/Timer
  5
• 250-mL plastic wash bottle of deionized water (+1 for central hood)
  5
• Paper labels marked with 'X'
  5
• Plastic paraffin film
  1 roll
• Scissors (+1 for central area)
  5
• 12.1 M HCl
  175 mL
• Na₂S₂O₃·5H₂O
  40 g
• Powder funnel
  1
• Glass funnel
  2
• 500-mL glass Erlenmeyer flask
  1
• 1-L glass graduated cylinder
  2
• 250-mL glass graduated cylinder
  1
• Magnetic wand
  1
• Large stir bar
  2
• 750-mL bottle
  1
• 500-mL bottle with acid resistant cap
  1
• 1-L glass volumetric flask
  1
• Weighing boats
  2
• Spatula
  1
• Top-loading balance
  1
• Baking soda
  1 box
• Deionized water
  Dependent on lab size
• Disposable plastic pipettes (minimum 3 per group)
  Dependent on lab size