Water quality indicators

Acid Base Balance Study Guide Definition: The body’s ability to regulate and compensate for variances of the acidity or alkalinity of body fluids through mechanisms in the brain, kidneys, lungs, and buffering system. Concept Key Terms: • Acid: any substance that has a pH less than 7.0 • Acidosis: the condition of having too much acid build up in body fluids, below 7.35 • Alkalosis: the condition of having too much alkaline build up in body fluids, above 7.45 • Anion: a negatively charge…

unknown amount of another substance for an aqueous solution reaction.2 To standardize the NaOH solution and determine the molar concentration, it needed to react with a primary standard acid due to NaOH being hygroscopic, in which it readily absorbs water vapor.1 In this case, KHC8H4O4 served as the primary acid standard since it’s only slightly hygroscopic and the mass was known, in which the moles could then be calculated from using the equation: mass (g) KHC8H4O4 mol KHC8H4O4204.23 g…

Uranium and its decay products can be found in the environment through a wide array of anthropogenic activities such as mining, nuclear and power generation industries and the production of phosphate fertilizers .(Sprynskyy et al. 2011) They pose a severe, long term ecological and public health threat (Khani 2011, Landa 2003) and therefore there is a considerable effort in the removal of these pollutants before their final discharge in the environment, as well as their recovery as an energy…

The appearance of the API was done by visual observation Solubility Studies Solubility profiles of Atorvastatin were done by solubility equilibrium method. It is done by stirring an excess of drug in the solvents water, methanol, ethanol isopropyl alcohol for a prolonged period until equilibrium is reached. It is also done in various concentrations of pH buffers. Bulk density:…

an acid or a base? There are different methods to discover whether a substance is an acid or a base. One of the methods is by using an acid-base indicator or by identifying hydrogen or hydroxide ions in a substance’s chemical formula. Certain materials such as a plastic template, red litmus paper, blue litmus paper, phenolphthalein, universal indicator, and a pH chart can be used to help us distinguish acids and bases. Before beginning this experiment, a lab coat and goggles should be put on…

were used to help understand the different behaviors of different concentrations. Household items were used to help apply basic theories about acids and bases such as pH. The titration curves were evaluated to help determine which indicator needed to be used for the indicator titration. Anions are ions that have more electrons than protons, therefore,…

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 in terms…

Natural Indicators Lab; a Study in pH Levels Using Green Cabbage Introduction- pH is the concentration of hydrogen in a substance. It is the scale used to tell how acidic or basic a solution is. The normal pH scale goes zero to fourteen. Zero to about six indicates that the solution is an acid. If the solution is closer to zero it makes it a stronger acid, but if the solution is closer to seven than it is a weak acid. If a solution has a pH of seven then it is neutral. A pH of eight to fourteen…

titration – pre-titration, buffer region and hydrolysis. Lastly, all pH’s are reflected by the concentration of hydronium ions in a solution, which is determined by the salt solution itself and its reactions with water. Just as in ammonium chloride, the solution has two possibly reactive ions with water and must evaluate and compare the equilibrium constants to determine the effect of the pH of the…

number of mL or moles needed to reach the endpoint, the greater the buffering capacity. This is because it signifies that the highest concentration buffer resist the most change in pH. If a student were to use the bromothymol blue indicator instead of the thymol blue indicator in Part B, he/she would not be able to test the buffering capacity of acetic acid/sodium acetate buffer by adding HCl because bromothymol blue changes color when the buffering…