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Temperature Change With Compounds NaCl & CaCl

Temperature Change With Compounds NaCl & CaCl. By Kirsten, Eric, and Matt. Question:. What happens to the temperature when a solute dissolves in a solvent?. Materials:. NaCl. Graduated Cylinder. Temperature Sensor. Computer. Foam Cup. What Are The Variables In This Lab?.

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Temperature Change With Compounds NaCl & CaCl

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  1. Temperature Change With Compounds NaCl & CaCl By Kirsten, Eric, and Matt

  2. Question: • What happens to the temperature when a solute dissolves in a solvent?

  3. Materials: NaCl Graduated Cylinder Temperature Sensor Computer Foam Cup

  4. What Are The Variables In This Lab? The independent variable is the amount of sodium chloride in grams. The dependent variable is the temperature.

  5. What Stayed The Same In The Lab? • The type of solute (NaCl and CaCl). • The styrofoam cup. • The amount of water (50 mL). • The equipment we used (temperature sensor, computer, and graduated cylinder).

  6. Conclusion According to the data, the temperature decreased when NaCl was added, and increased when CaCl2 was added. The data from the virtual lab and the data from our lab was closely related. When more NaCl was added to the solvent, the temperature of the solution decreased by a rate of about .5 degrees per gram. As the more CaCl2 was added, the solution increased by a rate of about 1.3 degrees per gram. Our hypothesis was supported throughout the lab. As we stated before, the CaCl2 the temperature increased and as the NaCl was added the temperature decreased. We used NaCl, which is sodium chloride. As the NaCl was added it absorbed the energy and decreased the temperature. We also used CaCl2 ,which is calcium chloride. This did the opposite of the NaCl. It released the energy from the particles and caused the temperature to go up. This is because the NaCl and CaCl2formed and broke bonds with the water leaving spaces. Causing the temperature to increase and decrease.

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