50 Ml Beakers Lab Report

The Distilled water pH average of HCl for zero drops was 6.67, and the pH for the final thirtieth drop

We placed 50 mL of vinegar, tap water, seawater into three respective beakers. 50 mL of seltzer water was placed into a jar with a lid

Title: The Affects of Acidic Solutions on Lima Bean Plants Abstract: To determine the best Ph to grow bean plants at maximal growth we have conducted a controlled experiment. First grew twenty five pea plants in twenty five individual hydroponic pots, with 250 ml distilled water, until they grew into mature plants. Then divided those plants into five different sections, each section has five plants. Then tested five different liquids all having different Ph levels. These liquids are distilled water, tap water, lemon water, Tylenol water and sparkling water.

To discover how lima bean germination was affected by the use of other liquids in the place of water.

We only added a small amount of HCl to the water and sodium chloride. We did not continue to add more HCl after a significant drop in pH was recorded. We added a total of 2 mL of HCl to both H20 and NaCl before the pH changed. The 1 gram solution of sodium acetate and acetic acid changed after a 8 mL, and the other two never dropped before we reached our total of 10 mL HCl.

H. How would you prepare 10 mL of a 0.25M HCl solution if 1M HCl was available? How much

The pipette was used to transfer 8 mL of the 0.5 molarity solution into the graduated cylinder. Distilled water was added to raise the bottom of the meniscus to the 20.0 mL line and the solution was transferred into the beaker after it was rinsed with the solution. The pipette was used to take a small quantity of the solution and rinse and then fill a test tube with the solution. The amount of 0.2 molarity solution needed to create 20.0 mL of 0.1 molarity solution was calculated as 10.0 mL. The pipette was used to transfer 10.0 mL of 0.2 molarity solution into the graduated cylinder and distilled water added until the bottom of the meniscus reached the 20.0 mL line. The solution was transferred to the rinsed beaker and then a portion placed into a test tube that had been rinsed with the solution. The amount of 0.1 molarity solution required to create 20.0 mL of 0.05 molarity solution was calculated to be 10.0 mL. The pipette was used to transfer 10.0 mL of 0.2 molarity solution into the graduated cylinder and distilled water added until the bottom of the meniscus reached the 20.0 mL line. The solution was then placed into a beaker that had been rinsed with the solution and then into a rinsed test

According to research done at the University of Florida (http://hendry.ifas.ufl.edu/HCHortNews_pHProblems.htm), the PH levels of the soil can affect the growth of a plant. In this research, the University of Florida was able to confirm that plants react better to PH levels that range from 6 – 7.5. In my experiment I will be pushing the plant's boundaries by watering the plants with plain, black (Name of coffee using) caffeinated coffee that has a PH level of (PH level). The plant I have chosen are lima beans. I chose the lima beans because they are a hardy plant.

First, a 100 mL graduated cylinder was obtained and filled with 35 mL of water. A pipet was used to attain a more accurate amount of liquid. The water was then poured into a beaker, which was weighed on an analytical balance. Next, an Alka-Seltzer tablet was obtained and the weight measured using the same balance the weight of the beaker was measured on. When both masses were recorded, the tablet was dropped into the water. The liquid was swirled to allow for the tablet to dissolve completely. After the fizzing had stopped, the beaker was once again weighed and the mass was recorded. Each step was repeated seven more times for a total of eight trials. However, with each trial the liquids added to the beaker changed. In each new trial, an additional 5 mL of vinegar was added and 5 mL of water was taken away. Thus, beaker one had 0 mL of vinegar and 35 mL of water; beaker 2 had 5 mL of vinegar and 30 mL of water; beaker 3 had 10 mL of vinegar and 25 mL

Of the four soils tested, Vigoro and Miracle-Gro were the only two which indicated a Phosphate content. However, Miracle-Gro was wet when taken out of the bag, so the additional watering every 3 days may have caused an excess amount of water which explains the lower amount of growth despite the phosphate content. The key component that explains why the Vigoro seeds grow the most successfully out of all those planted, is the fact that in the Vigoro soil, the bean seed sprouted before the soil molded. In Scotts, Jiffy, and Miracle-Gro, the soil molded before there was any indication of seed growth, which ultimately hindered the bean plant from growing as fast as it did in Vigoro. The reason why many of the seeds in all four soils did not grow at all, was due to the fact that the seeds had rotted before they had even sprouted. Therefore, to improve for future experiments, the seeds should be germinated beforehand in order to ensure that the experiment is truly testing plant growth, and not just whether the soil tested allows for seed germination. There are many implications behind the results of this experiment that relate to the real

The purpose of the experiment was to test the levels of water contamination in each beaker to see how high each vial would contaminate the water based on the color the water became once each vial was poured into the given beakers. In Experiment 2: Water Treatment, I used potting soil, sand, activated charcoal, gravel, alum, bleach, and beakers with my own-supplied tap water. The purpose of this experiment was to see if the different particles placed in the tap water could be removed by various filtration techniques. In Experiment 3: Drinking Water Quality, I used several various test strips, each individual strip testing for ammonia, chloride, 4-in-1, phosphate, and iron, along with samples of Disanti bottled water, Fiji bottled water, and my own tap water from home. The purpose of this experiment was to determine if bottled water is any more or less filtrated than my own tap water at home.

ii. The second part of the titration series involves titration of NaOH with Hydrochloric acid (HCL). Again, three reps of titration and a blank titration have to be completed. A volumetric pipet is used to measure 10.00mL of HCL into three labeled conical flasks. Then the flasks are filled with deionized water until about the 50mL mark. A buret is

Then, the test tubes were placed in the test tube rack. A plastic dropper was used to measure the number of drops that were deposited in every test tube. To test for temperature and for pH levels, in the number one test tube, twenty drops of Hydrochloric Acid (HCL) were added. For the number two test tube, twenty drops of water (H2O) were added. For the number three test tube, twenty drops of sodium hydroxide (NaOH) were added.

For this experiment, a pH meter was used so this part of the experiment began with the calibration of the pH meter with specified buffers. The buret was then filled with the standard HCl solution and a set-up for titration was prepared. 200g of the carbonate-bicarbonate solid sample was weighed and dissolved in 100 mL of distilled water. The sample solution was then transferred into a 250-ml volumetric flask and was diluted to the 250-mL mark. The flask was inverted several times for uniform mixing. A 50-mL aliquot of the sample solution was measured and placed unto a beaker. 3 drops of the phenolphthalein indicator was added to the solution in the beaker. The electrode of the pH meter was then immersed in the beaker and the solution containing the carbonate-bicarbonate mixture was titrated with the standard HCl solution to the phenolphthalein endpoint. Readings of the pH were taken at an interval of 0.5 mL addition of the titrant. After the first endpoint is obtained, 3 drops of the methyl orange was added to the same solution and was titrated with the standard acid until the formation of an orange-colored solution. Readings of the pH were also taken at 0.5 mL addition of the titrant.

A color code was used to tell what the pH of the water was. For example, if the pH was 6, the pH test paper would turn into the color yellow, and if the pH was 7, the pH test paper would be a light green. Identifying the pH based on color could have slight human error as the pH could actually be 6.8, but when the pH of the water was tested, it could have been seen as a light green instead of a darker yellow green, thus the pH would be identified as 7 instead of the proper 6.8. Another issue that could’ve been caused from human error was that when measuring the amount of water by using a graduated cylinder, it could’ve been measured a slight bit off. Originally, the amount of water that was used for testing was 25mL. However, when measuring the amount of water, the water could’ve been 24.9 mL instead of 25mL due to the miniscus being formed and where the meniscus was believed to be. This would cause the amount of water being tested not the same for all the types of waters. Another issue that could’ve affected the result was that the refrigerator that held the test tubes that were in the cooler environment was frequently