RP: temperature changes

• steps:

  1. add the acid into a polystyrene cup
  2. record the start temperature of the solution
  3. add the other reactant (test solution) to the polystyrene cup
  4. add the lid and stir the solution
  5. record the highest/lowest temperature that you observe
  6. calculate temperature change
  7. repeat steps (1-6) 2 more times to identify outliers and calculate an average
  8. repeat steps (1-7) with 4 different test solutions
• Set up equipment as shown in the diagram. Add 50cm (cubed) acid into a polystyrene cup and record the start temperature of the solution. Add a metal to the cup and then add the lid. Stir the solution through the hole in the lid using the thermometer and record the highest/lowest temperature change observed. Calculate the temperature change and repeat twice more to calculate an average. Repeat the whole practical with 4 different metals. Control the type, volume and concentration of acid.