17. Press START and turn on the stir bar. 18. After 10 seconds have elapsed, add hot water sample 19. Press STOP when the thermograph stabilizes 20.
Using another 125-mL flask, 60-mL of 0.3622 M potassium hydroxide in ethanol was deposited. Both flasks were clamped in a temperature-controlled bath regulated at 50.0˚C. The solutions were then set in the temperature bath for ten minutes to equilibrate. An empty 250-mL Erlenmeyer flask was also clamped in the same water bath. In another flask 50-mL of ice water was deposited with three-drop phenolphthalein.
Record the mass of thyme used. 2. Using a measuring cylinder, add 50cm3 of 1.0mol dm-3 sulphuric(VI) acid and boil gently for 5 minutes. 3. Allow the mixture to cool for a few minutes then filter it, using either gravity or vacuum filtration.
Place the test tube, with the zinc in it, in the water and continue heating. 5. Fill the Calorimeter with the water to 45mL, measuring the amount of the water in the Calorimeter. 6. Record the temperature of the water in the Calorimeter and the temperature of the boiling water.
After the effervescence, (15mL) of concentrated HCl was added drop wise to the solution. The mixture was then heated for 15 minutes in a boiling water bath. In two separate small beakers (20mL) of distilled water was placed in one and (20mL) of 6M HCl in the other. Both beakers were placed into an ice bath. After heating, the mixture was cooled to room temperature and filtered by vacuum filtration into a fritted funnel to yield a purple product.
Now right-click on the flask, and select Heating Mantel from Distillation Equipment then, Right-click on the flask, and select Distillation Head from Distillation Equipment last, Right-click on the flask, and select Condenser from Distillation Equipment. Now, right-click on the flask, and select Distillation Take-off from Distillation Equipment. From the Equipment menu, select the 100 mL Graduated Cylinder. Place it under the end of the distillation take-off. The graduated cylinder will collect the distillate.
Then take jug with room temperature water and pour out three cups into the pot. Before placing it on the stove and heating the water to repeat the experiment, the water temperature was taken to ensure that it was approximate to the room temperature. Literature Review: According to an article in The New York Times, the notion of a body of cold water will reach boiling point quickly as to an identical body of hot water under the same parameters is false (O'Connor, 2008). In this experiment it is not to prove what has already been done, rather to find if the rise of water bodies would be parallel. The notion is to calculate the slope of increase in water temperature given two different starting points, are they both identical.
4. Write down the data in the notebook for further use. Cold water (0°C) : 1. Add water to the beaker filled with ice and wait for 5 minutes. 2.