Water quality indicators

can be determined by the white vinegar with the known concentration of sodium hydroxide from the previous lab. (Eq 2). CH3CO2H(aq) + NaOH(aq) = CH3CO2Na(aq) + H2O(l) (Eq 2) The purpose of indicator used to determine the end point of the reaction when both the reactants and product are colorless. The experiment goal of the lab is to determine the concentration of acetic acid (CH3CO2H) in the commercial white vinegar brand. Procedure and…

Use a 20ml volumetric pipet to measure the required volume of decarbonated soda and put it in a 250ml beaker. Add distilled water using a graduated cylinder. Place pH probe in the soda solution. Put beaker on a magnetic stir plate (keep probe away from the stirrer). Fill buret and align the tip right above the drop counter. Record the initial volume of NaOH (Vi). Turn on the…

Calculations- Representative Fraction (RF): 0.92cm / 8.95cm = 0.10 Limitations- Ruler: +/- 0.05 cm One possible limitation for this experiment was the contamination of the chromatography paper by foreign amino acids. Any amino acids that our gloves came in contact with throughout the lab transfered over to the chromatography paper and appeared as purple spots, mostly on the border of it. Conclusion- The amino acids in unknown mixture A were Glycine and Valine. The amino acids in unknown…

Quality Matters is recognized as a leader in quality assurance in online education. Over the past six months, ONU Global has worked very hard to align our course development process with Quality Matters. This is no small task, and we still have much work to do! We have made many updates to our templates and curriculum development resources that will help to ensure the alignment of our courses with QM standards. Our strategy is to implement consistent course quality standards by incorporating…

that needs to be look upon is the quality of education and care they receive during their early years. The early years are the most crucial years for child development (Caroll-Lind & Angus, 2011). The increasing number of mothers joining the labour force, emerging understanding on the benefits of early childhood participation and the move to promote social equity among children of diverse backgrounds are some of the reasons for the growing need to provide quality early childhood curriculum for…

Quality Management (BADM370 -1704A -03) Instructor: Thomas Joseph Unit 2: Role of Leadership Amanda Kranning October , 2017 Currently employed with a not for profit organization, we utilize the quality improvement program Kaizen in conjunction with the 5S model. Kaizen is the concept of continuous improvement whereas the 5S model focuses on Sort, Straighten, Shine, Standardize, and Sustain or what we refer to as workplace organization. The way we approach improvements is to provide Kaizen…

distinct categories: acidic or basic. Acidic, based on the Bronsted-Lowry Theory, is defined as a proton (H+) donor. An equation exemplifying an acid dissolving in water is: HCl (g) H2O H+ (aq) + Cl- (aq) A base, based on the Bronsted-Lowry Theory, is defined as a proton (H+) acceptor. An equation exemplifying a base dissolving in water: NaOH (s) H2O Na+ (aq) + OH- (aq) Molarity, also known as the concentration, is represented as moles of the measured substance divided by the…

bromthymol blue, and an elodea plant in an environment with light, it will result in a color change from yellow to greenish blue. Also, if a sealed test tube containing bromthymol blue and an elodea plant in a dark environment. The bromothymol blue, a pH indicator, was used to measure the amount of CO2 present in a given test tube. The controls being tested were two negative controls that consisted of one test tube containing bromothymol blue, CO2, and an elodea plant while being in a dark…

known concentration neutralizes an acid or base of unknown concentration. The neutralization of an acid or base in acid-base titration can be measured with either a color indicator or a pH-meter. For this experiment we are using a color indicator. The indicator phenolphthalein is used in experiment 1 and starch was use as an indicator in experiment 2.Phenolththalein is a colorless in acidic solution and pink in…

Abstract: The purpose of this experiment was to prepare and standardize a sodium hydroxide solution as well as determine the molar concentration in as strong acid and the percent by mass of acetic acid in vinegar. We used volumetric analysis, also known as titration, in both experiments. The average molar concentration for NaOH was 0.2749 mol/L while the average molar concentration of the acid solution was .2493 mol/L.The average percent by mass of acetic acid in vinegar was found to be 12.3 %…