Question

based on data please help fill out chart and questions 1,2,3

Part II: Neutralization of the Tablet 1. Obtain one of the commercial antacid tablets that your Lab Instructor has assigned you. 2. Weigh and record the weight of the tablet. 3. Crush the tablet using mortar and pestle. 4. Transfer as much of the crushed tablet as you can onto a weigh boat. 5. Weigh the tablet and weigh boat, and record this value. 6. Pour the entire contents of the weigh boat into the 200 mL of HCl. Reweigh the weigh boat. 7. Swirl the beaker and then place the beaker onto the hot plate. Also begin heating (low setting); the beaker just needs to be warm (not hot). 8. Allow the beaker to heat for at least 5 minutes while gently stirring with a stir rod. Part III: Titration of Simulated Stomach Acid 1. Add 2 drops of methyl red to each of the two 125 ml. Erlenmeyer flasks that contain the 25.00 mL of original simulated stomach acid (0.15 M HCI). 2. Record the initial buret reading containing the NaOH solution and then begin titrating. Methyl red is red when acidic and becomes orange just before the yellow endpoint 3. Record the volume of the NaOH at the endpoint and then refill the buret. 4. Repeat this titration with the second flask to the yellow endpoint. This endpoint should be within 0.1 mL of the volume you obtained for the first flask or you will need to repeat this titration 5. When finished with this part of the titration, discard the contents of the flasks by pouring them into a waste container. 6. Rinse each flask thoroughly with distilled water. These will be reused when you titrate the "neutralized solution." Part IV: Titration of Partially Neutralized Stomach Acid 1. Obtain a funnel and a piece of filter paper. 2. Fold the filter paper and place it into the funnel. Place the funnel into the dry Erlenmeyer flask you prepared earlier 3. Carefully position the dry folded filter paper in the funnel and begin pouring the antacid/acid solution into the filter paper. 4. The paper should position itself down in the funnel as the solution dampens the paper. Take care not to tear the paper. 5. Allow the solution to filter into the flask. You only need to collect -75 mL of this solution. 6. When you have collected 75 mL of filtrate, move the funnel back to the beaker. 7. Use some of this filtrate to rinse the 25.00 mL pipet that had originally been used for the simulated stomach acid. 8. Allow the filtrate to drain through the stopcock and discard this rinse. 9. Now fill the 25.00 mL volumetric pipette with the filtrate,