Chemistry Lab report Coursework Example | Topics and Well Written Essays - 500 words

Chemistry Lab report - Coursework ExampleIn this lab, we aim to build a on the job(p) model of a self heat energy cup using the heat released during an exothermic reaction. We shall also par two chemical reactions to find which reactant causes weewee in the cup to reach higher temperature in a shorter duration.In our simulation of the self-heating cup, the heat energy from an exothermic reaction is used to heat water. Temperature of the water in the cup increases due to transfer of heat energy from the reaction to the cup through conduction. If there is no heat loss during the experiment,A plastic cup was covered with aluminum foil to prevent its thaw on exposure to heat. Tap water (75 mL) was added to the cup. To prevent heat loss from the cup, a lid do of aluminum foil was placed over the cup and two quite a littles were made to the lid. Through one hole in the lid, a digital thermometer was placed to record temperature of water in the cup. The digital thermometer was connec ted to a data logger in order to record the temperature and to plot a temperature-time graph. A glass celestial pole was placed through the other hole for stirring.The outer walls and bottom of a clean beaker were covered by aluminum foil in order to prevent heat loss during the reaction. Anhydrous calcium chloride (61.95 g) was added to the beaker. weewee to be added to the calcium chloride was measured (61 mL) and kept handy. Just before placing the cup on the beaker, the recording of temperature of water in the cup was started. Water was added to calcium chloride in the beaker and immediately, the cup was placed on the beaker, touching the solution. Temperature was preserve for 10 minutes, with constant stirring using the glass rod. The stirring is essential to ensure even heating of water in the cup.A new cup and beaker were readied in a similar manner. To the new beaker, papal bull sulfate (9.25 g) and zinc powder (4.8 g) were added. When the apparatus was set up, 5 mL