Calorimetry Lab Report Results

Procedure: I used a ruler, thermometer, and scale to take measurements. I used a graduated cylinder, short step pipet, scale, and ruler to determine volume and density. I used a volumetric flask, graduated pipet, pipet bulb, scale, and glass beaker to determine concentrations and densities of various dilutions.

of sugar to 25ml of water and dissolve it. When we have the water at

In order to find the pH of each household item by using pH paper, the pH paper was placed on the drop plate. Using the dropper, start by having the household item dropped onto the pH paper. Immediately observe in order to spot any colour changes on the pH paper. To determine the pH by using the pH scale and record the pH on your table of observations. Depending on what the pH is, it could be very acidic, basic or neutral. Repeat these steps for the other products.

8. Repeat step 7 with H2SO4, except that you should use a 10 mL graduated cylinder of H2SO4 and adding 15 mL water.

Table 2: Consists of color extract taken from a red cabbage for a natural indicator. The pH reading that was measured by using the pH meter and the result of the pH reading to determine whether the solution was acidic or basic.

Cut the potatoes using a cork borer approximately 5cm in length and 1cm in diameter. Using the appropriate tool cut the potatoes into cylinder form measuring the cylinders with a ruler.

In order for the media to show the change in acidity the solutions are modified and include an indicator chemical. This indicator will change color depending on the ph level of the media it is in. For all the media used in this experiment, the indicator changes to a yellow color when in the presence of an acid and turns magenta/pink when in the presence of a base or alkali.

XII. Take the 250 ml beaker to your lab bench. Set up a gravity filtration with a plastic funnel, folded wet filter paper, and an Erlenmeyer flask. Pour the content in the 250 ml beaker slowly through the filter paper. Wash the filter paper with deionized water. Dispose of the filtrate in the proper labeled waste container.

1) Pour 25 mL of the 1 M hydrochloric acid into the beaker and rinse the solid by swirling the acid around in the bottom of the beaker.

1.) Transfer the distillate to separatory funnel. Fluid didn’t seem very clear but sufficient to finish our lab on time.

3. A few drops of 6 M acetic acid were added until it became basic.

Approximately 8.8ml of sodium hydroxide will be required to neutralize 100ml of acetic acid. (http://schoolworkhelper.net/titration-of-vinegar-lab-answers/)

3. Use a sterile pipette to transfer 0.1 ml of each dilution on to a MacConkey agar plate.

5. In reaction three, the number of moles of NaOH can be calculated from the concentration of the solution (1.0M = 1.0mole/L) and the volume used. The calculation is below. Enter the result into Data Table 2.

2. Following solutions are added to the tubes and the pH of each tube is determined: