PH

Optimisation studies were carried out on the basis of varying initial concentration of Chitosan and Xanthan, and varying pH of Chitosan solution. The results obtained were interesting. Unstable capsules were formed with the following combination of Xanthan and Chitosan concentration. The Chitosan solution pH was kept constant at 5. The above table gives the inference that when Xanthan concentration is less than or equal to 0.5% or Chitosan concentration is less than or equal to 0.5%, the…

that it was quick and easier to use that the pH meter. However, ultrasonography will show if the (NG) tube passes through the esophagus but it does not show if the tip is still within the esophagus. The one (NG) tube of the 35 studied was noted to be in the esophagus and not the stomach. Because it passed through the esophagus but the tip remained in the esophagus and not the stomach, this was deemed a false positive. The articles states that the pH meter was 71% accurate in correct (NG)…

base. This reaction is known as neutralization. When an acid or base are neutralized, its pH level goes to 7 or neutral. On the pH scale, acids range from 1-6 and bases range from 8-14. An example of neutralization is when one mole of HCl and one mole NaOH are mixed to make table salt and water. The pH of water is 7, but salt does not have a pH and does not interact with water molecules.3 Therefore, the pH of the solution is 7, or neutral. To determine how much of a base is required to…

Although scientists have been tracking ocean pH for more than 30 years, biological studies really only started in 2003, when the rapid change caught their attention and the term "ocean acidification" was first coined. What we do know is that things are going to look different, and we can't predict…

second step is to take it to the lab to test the water for pollutants and to test the quality of the water. Ph. is a measure of the hydrogen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with low concentrations of H+ ions have a high ph. Orange juice and coke have a low pH, but bleach and oven cleaner have a high pH ("What is pH"). Rainwater…

compound with sulfuric acid (H2SO4) produced no visible reaction (precipitate), although the pH of the resulting solution was very acidic. Combining the unknown compound with sodium hydroxide (NaOH), a strong base, also had no visible reaction. However, the resulting solution was a lot more basic. Reacting the unknown compound with sodium nitrate (NaNO3), a salt, did not have a visible reaction nor did the pH of the resulting solution change. The last reaction involved the unknown compound and…

Buffer Systems As humans, we constantly need to regulate our bodily pH. This regulation process is called homeostasis, and is controlled by the hypothalamus and pituitary gland by a buffering system. A buffer solution is used to maintain the pH at a safe acidity. “A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid” (Boundless, 2010) Equation 1 – Generic Buffer Equation HA (aq) + H2O (l) --> H3O+(aq)…

grow at a very high speed rate. Their scientific name is Brassica rapa. Plants have enzymes, enzymes are special proteins that are essential for living organisms. Enzymes have preferred environments. “If an environment is too acidic (low pH) or alkaline (high pH) an enzyme won't function,…

3.0 Results and Discussion Figure 1 shows the infrared spectrum for both crosslinked and non-crosslinked films. Both carrageenan and vanillin contain similar functional groups such as CH4, C=O, C-O-C, C-OH. There is no significant difference in the spectrum that can be detected for crosslinked and non-crosslinked film samples. The spectrum can be divided into upper and lower spectrum. In the upper spectrum for the region of 2000 – 3600 cm-1, O-H stretching (3100 – 3600 cm-1) and C-H stretching…

In order to safely dispose of a solution with a pH of 12, the solution needs to be diluted with an acid to neutralize the basic solution. The pH range should be between 5 to 8 to be ready for disposal. 2. A graduated cylinder, Erlenmeyer flask, and beaker were used to measure a 60-mL volume. Which of these devices seems to be the most accurate for measuring a 60-mL volume? Be sure to explain what the term ‘accurate’ means. How did you determine this during lab? State some reasons why this…