PH meter

Introduction A hydrogel is a jelly-like material made of a network of polymer chains capable of absorbing a significant amount of water; enough to make water constitute 40 to 90% of the material’s weight. Hydrogels have numerous applications but among their most noteworthy are those related to the medical field.1 Numerous hydrogels exhibit a high degree of biocompatibility, making them particularly suitable for controlled and sustained release drug formulations.1,2 The wide variety of hydrogels…

oxidant. Sulfide minerals are the most common producers of AMD, but mining waste rock, tailings, and other mining structures also generate AMD. AMD has a low pH and consists of large concentrations of heavy metal and other toxic elements. This pollutant affects both human health and the environment. AMD also occurs…

The developed method consisting the mobile phase 3g of Docusate Sodium was dissolved in 580 ml of Methanol, sonicated to dissolve to this 420 mL of milli Q water was added and pH was adjusted at 3.0 with perchloric acid with isocratic programming, XTerra RP 18 column (250mm×4.6mm, 5μm) column as stationary phase with a flow rate of 1.0 ml/minute. Proposed method was found to be linear in the concentration range of 18.80 to 56…

Experiment 7 Electrophilic Aromatic Substitution Of Salicyamide Name: Lidia Santiana Palha Student number: s3333523 Email-address: lidiapalha@gmail.com Name of demonstrator: H.Helbert Reaction Equation Summary Salicylamide and sodium iodide are dissolved in ethanol, and stirred and cooled to 0. After that household bleach was added while stirring vigorously, solution changed from colorless to pale yellow. Sodium thiosulphate and hydrochloric acid were added aswell.…

The GCMS analysis showed the metabolites could be definitely identified as concern compound by comparisons with known authentic compound. The m+ ion is found at m/z94 for phenol. The molecular weight of the phenol is 94. The base peak value of phenol was observed as 94 and mass peak values were recorded as 66, 39, and 55. The m+ ion for acetophenone is m/z 120. The molecular weight of the compound was observed as 120, the base peak and mass peak values were recorded as 105 and 91, 77, 51, 39,…

Michael is an IG2 chemistry student. He has to his disposal, in the chemistry lab, the chemicals sodium chloride, in both chip and powdered form, and hydrochloric acid. Michael decides to mix the two substances by pouring the hydrochloric acid on the sodium hydroxide in both states chip and powder form. Michael does not have an aim or reason for doing this so his intentions are unknown. Michael gives a possible outcome or hypothesis that as soon as the hydrochloric acid is added the chips of…

on the pH of the milk. At certain pH value, positively charges and negatively charges of the casein will equal, so that the number of electrons equals to the number of protons. [1] Approximately pH 4.6 is the pH value that acid casein is precipitated and least soluble. In milk, which has a pH of about 6.6, the casein has a net negative charge and is quite stable. However, if there is addition acid adds to the milk, it decreases the pH of casein. Therefore, less casein precipitates when pH value…

6. RESULTS AND DISCUSSION All the results generated from the present study are represented in the respective tables. The powdered gum of Acacia arabica was subjected to preliminary organoleptic evaluation. The scanty availability of information on this plant facilitates the study on it. The attempt is made to study the Pharmacognostical, phytochemical and pharmacological activities of gum of the plant. The study was divided into three major parts viz. • Pharmacognostical studies •…

Basicity of Pyridine vs Pyrrole The lower the pKb value of a compound, the stronger a base it is. Since pyridine has a lower pKb value, it is a stronger base than pyrrole. In this example, we cannot use either the steric factor or inductive factor to explain their basicity. Instead, we have to look at the hybridization state of the respective nitrogen atoms. The nitrogen atoms in pyrrole and pyridine are sp2 hybridized because they satisfy the following two conditions: 1) the atom has at least…

“Empty your mind, be formless, shapeless--like water. Now you put water in a cup, it becomes the cup; you put water into a bottle it becomes the bottle; you put it in a teapot it becomes the teapot. Water can flow or it can crash.Be water, my friend.”-Bruce Lee. Water can obtain many ways, but the most dominated ways are tap, water that is usually received from a person's home that originates from a water plant or well on the personal property. Or bottled water, water that is purchased from a…