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EQUILIBRIUM
Exploring Equilibrium: It Works Both Ways—Student Laboratory Kit
Students explore the nature and consequences of equilibrium in three reversible chemical reac- tions—the acid–base equilibrium of bromcresol green indicator, the solubility equilibrium of magnesium hydroxide and the complex-ion equilibrium of iron(III) thiocyanate. Students practice critical-thinking skills as they apply their knowledge to predict whether a reaction is exothermic or endothermic. Includes reproducible student handouts, Teacher Notes with sample data and answers to questions and all necessary chemicals and consumable supplies. Complete for 30 students work- ing in pairs.
AP1757 | $62.65
Equilibrium in a Syringe—Chemical Demonstration Kit
It’s bubbly, it’s colorful—it’s equilibrium in a syringe! Use ordinary seltzer water, an acid-base indi- cator and a large syringe to transform a common gas solubility phenomenon into an exciting, hands-on demonstration. An acid–base solution is added to the seltzer water and a portion of the solution is drawn into the syringe. Students note the pH by comparison to the indicator color chart. As the temperature and pressure of the solution in the syringe are varied, the solubility of carbon dioxide gas changes. Students observe the equilibrium shifts in the syringe as they monitor the pH of the solution.
AP6644 | $36.40
Demonstrate Phase Changes of CO2—Demonstration Kit
The triple point is when all three states (solid, liquid and gas) are simultane- ously present in a closed system. Using the unique device in this kit, all three phases of CO2 can be easily and safely observed. The apparatus comes with
a large pressure gauge to monitor the pressure changes in the apparatus. AP4505 | $70.30
Syringes, Without Needle
8 options at flinnsci.com
Syringe Tip Caps
AP8958 | $2.60
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FLINN SCIENTIFIC I EQUILIBRIUM