Experiment 6 Prelaboratory Assignment: Calorimetry
College: First year, College: Second year
1.
[((100x1cal/s)(24.6-22))/(20.91-(99.4-24.6))]=0.166/g
2.
-a
-b
-a Place metal in a dry test tube. Place test tube below water surface in filled beaker.
-b Use boiling chips in beakers
3.
-a
-b
-a It does up, decreases. Heat is retained longer in the metal, than it the liquid.
-b Heat is lost, so you have to account for the lose so that it doesn't go into increasing the temperature of the mixture.
4.
- They both should get the same temperature.
- Difference lies in amount of mass being heated in each experiment. Brett and Lindsey add same amount of water: 45.5 instead of 50ml.
5.
-a
-b
-a Lattice energy is less than hydration
-bIncreased temperature usually increases the solubility of solids in liquids in accordance with the Second Law of Thermodynamics. Increased temperature means a greater average velocity for the particles. This allows them to move from one position to another more easily.