PH indicator

for pancreatic lipase is lipids or triglycerides. Hydrolysis of triglycerides occurs in the duodenum and the PH rages are from 7.1 to 8.2. • Phenol red was used as a PH indicator of the samples. if the sample is an acid then a yellow color is appeared, if the sample is alkaline then a red color will appeared. if the sample is neutral, it will be orange or if the sample is alkaline and has a PH of 10 or less, then it will have a pink color. Table 1 - Result of Lipid Digestion with…

to test for the most ideal pH and temperature in which catalase could work most efficiently on a substrate. The enzyme for this lab was a catalase located in cow liver and the substrate was hydrogen peroxide (H2O2). We predicted that catalase…

Place 10 mL of 1.0 HCl in beaker and add 90 mL water and use the pH meter (Station) measure pH of solution Put a magnetic stir in beaker, and place one or two pieces into solution until the pH is 3.5 Measure the mass of of the remaining metal and determine the molar mass of the unknown metal with the given formula For part B add 10 mL of unknown solution (0.05) and add 20 mL of water, 5 drops of indicator, magnetic stir Use the pH meter for after completing previous step Charted Results and…

Everything is made of atoms, which are the smallest representative parts of each of the ninety-two elements that occur in nature. Elements are either metals, such as iron, copper or calcium or non-metals such as carbon, oxygen or nitrogen. Chemistry is concerned with the way atoms link together to form molecules, which are the natural chemical units of matter. Molecules represent the smallest particle of a chemical compound which retains the characteristics and chemical properties of the…

The determination of the pH of a buffer solution and the pKa for of a weak acid Introduction A practical was carried out to show how the Henderson-Hasselbalch equation works and to apply and hone the skills of pipetting, buffer-making, pH-meter use and graphing. The primary goal of the practical was to determine the pKa value of a weak acid. The Ka is an acid dissociation constant, it is a quantitative measure of the strength of an acid in solution. The pKa is defined as the negative log of…

particularly human influences. A wastewater affluent region in Oso Bay showed very high concentrations of Inorganic and organic nitrogen, phosphate, and carbon; it also showed a low concentration of dissolved oxygen, chlorophyll, and a more acidic pH (Wtz, et al. 2015). Signatures of eutrophication…

Discussion The research question of this paper asks: How is the pH of one’s mouth after a constant meal affected by the different sugar levels of various chewing gums. The chosen hypothesis was wrong for both the minty and sweet gums as it stated that their pH would be ultimately be acidic and there’d be a reduction form the initial pH. However, only one chewing gum had a significant decrease in its pH; the other pH values increased and either became alkaline or less acidic. There were several…

Benedict’s reagent detected any broken-down glucose. The same procedures were then performed waiting 5, 10, and 15 minutes before deactivating the amylase. Then again repeating the procedures with 4°C and 95°C water baths. Five test tubes were filled with pH buffers ranging from 2 to 10 in each tube before 2 mL of starch solution was added and the tubes were left to incubate at 37°C for 5 minutes. 500 μL of enzyme was added to each tube, then immediately quenched by adding 2 mL of 1 M…

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)…

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…