PH meter

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…

Like the sodium phosphate buffer, the solid was dissolved in 300 milliliters of distilled in a 500-mL beaker using a stirrer and a magnetic stirring bar. The pH of the solution was then checked using the pH meter and it was brought down to the desired pH of 4.8 using a couple of drops of glacial acetic acid. Then it was poured into a 500-mL graduated cylinder and brought up to a volume of 1000 milliliters using distilled water. The buffer was poured into…

In the testing stream water there will be nitrates, phosphates, dissolved oxygen, turbidity, different temperatures, and pH levels.The most important factor to stream testing is the temperature of the water. If the temperature increases the amount of dissolved oxygen decreases. (EPA and Staff, 2012)Phosphates are present in the water through human and animal wastes. (Oram, no date) Phosphates are used in laundry soaps, cleaners, industrial effluents, and fertilizers. (Oram, no date) Nitrates…

error that ultimately had an effect on everything we measured was that the pH meter wasn’t fully calibrated since not all…

studied by observing how the pH of the solution changes as the titrant is added. A plot of pH versus amount of titrant added will be constructed. Such a curve is called a pH titration curve. The equivalence point of the reaction will be determined from an analysis of the pH titration curve, and by the use of acid-base indicators. The pH measures the solution whether it is acidic and basic. The pH of the solution could be determined by using the following equation, pH= -log[H+]. It could also be…

Discussion Task 1. The calibration of pH meter was performed resulting a calibration equation Y=-57.833+403 (see appendix). After the calibration of pH meter the pH values show in the table 3, 6, 7, 10, 11 and 13 were calculated from the values of mv recorded by using aforementioned equation. Despite the values the pH reading were recorded the values used and reported in this experiment were the calculated pH. Task 2. The standardization of the titrant solution HCL was performed fallowed a…

Alkalinity is a measure of the ability of a water to resist changes in pH. Alkalinity in water is due to the presence of weak acid systems that consume by hydrogen ion produced by other reactions, allowing chemical or biological activities to take place within a water without changing the pH (1). In this way the alkalinity protects aquatic life. The measured value may vary considerably with the end-point pH used. Alkalinity is a measure of an aggregate property of water and can be interpreted…

there are two titrations performed and measured the pH of one salt solution. This experiment includes a strong acid and strong base titration, weak acid and strong base titration, and the pH measure of a salt solution. In performing a titration, a stir-bar, stir-plate, burette and pH meter. In the process of titration, it is required that the amounts of base added from the burette is as…

We dealt with both acids and bases. An acidic solution contains more hydroxide ions than hydrogen ions. The PH scale was developed as a more convenient way to express H+ ion concentrations. Acids have a PH that ranges from 0-6 and bases have a PH of 8-14. Unlike acids, bases contain more OH- ions than H+ ions. If the PH of a solution is 7, then the solution is neutral. Titration is a method for determining the concentration of a solution by reacting it with…

the reaction is complete, while measuring the pH per amount of base added. Using the data collected, the equivalence point can be found and the concentration can be calculated. Then the KA can be found at specific points (20%, 40%, etc). After finding the KA’s at specific points the average can be taken and compared with actual KA to determine the identity. Another method used was qualitative methods. 3 indicators were set up with specific ranges of pH for colour change. Each of the indicators…