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Carolina ChemKits®: Advanced Stoichiometry Value Kit

$99.00
(backordered: in stock 8/9/22)

Description

Bring your stoichiometry lesson to the next level with this activity that introduces students to the method of continuous variation to determine molar ratios. Students vary the amount of reactants in an exothermic reaction and measure the resultant temperature change. Pooled class data is used to investigate how varying reactant mole ratios affects temperature change. After constructing a Job's plot of the data, students determine the correct molar ratios for a balanced equation.

Students will:

  • Calculate the temperature change for an acid-base neutralization reaction
  • Prepare a graphical representation of class data and draw trend lines
  • Use the method of continuous variation to determine molar ratios in a chemical reaction

This activity requires 50 min to complete, and Value Kit materials are sufficient for 4 classes of 30 students working in groups of 3.

Specifications

What’s Included:
  • 4 3 M Sodium Hydroxide, 500 mL
  • 2 Phenolphthalein, 1%, 15 mL
  • 1 Citric Acid, 500 g
  • 100 Foam Cups
  • 25 Lids
  • 100 Pipets
  • 4 Weigh Boats
  • 1 Digital Resource Instruction Card
  • 1 Teacher's Manual with Reproducible Student Guide
  • expand to see full list
Needed But Not Included:
  • 20 Beakers, 250 mL
  • 10 Beakers, 400 mL
  • 10 Graduated Cylinders, 100 mL
  • 10 Calculators
  • 10 Permanent Markers
  • 10 Thermometers
  • 10 Wash Bottles with Distilled Water
  • 1 Volumetric Flask, 1 L
  • 1 Volumetric Flask, 500 mL
  • 1 Container, 3.5 L, for Prepared Citric Acid
  • 1 Container, 5 L, for Prepared Sodium Hydroxide
  • 1 Container, 8 L, for Prepared Sodium Hydroxide
  • 1 Long-Stem Funnel
  • 1 Balance
  • 1 Stir Bar
  • 1 Utility Knife
  •  Paper Towels
  •  Waste Containers
  •  Distilled Water, 8 L
  • expand to see full list
Return Policy:

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