Lab 6: Determination of Water Hardness using a Titrator Name: Brendan Lee Lab Partners: None Date of Experiment: 7/21/11 Location: My house Course Number: CHE 111 Abstract: The objective of this experiment was to develop familiarity with the concept of water hardness, practice titration using a titrator, and to determine the hardness of the local water supply. This will be done mainly by using EDTA (ethylenediamenetetraacetic acid) to test the indicator and titrating water with it. The amount of water (and therefore the amount of calcium and magnesium ions) needed to set off the indicator will be used to calculate the hardness of the water. Experiment/Observations: There are three parts involved in this experiment. The first part involved testing the indicator.
ABSTRACT Three experiments were completed to determine the quality of water that had been contaminated, soiled, and to determine the differences between the water that comes from a kitchen sink and the elegantly bottled water that is conveniently sold in the store. Using various Earth materials (sand, rock, soil, and charcoal) combined with scientific materials (beakers, funnel, and alum), the first two experiments tested the effect of contaminated waters filtered through a simple soil filter, as well as a complex Earth model filter. The final experiment used various test strips to test certain potential differences between tap water and bottled water. Testing Man’s Naiveté of Our Water Quality Drinking water in the United States has undergone many quality standard transformations throughout the 1900’s up until present day. There are many rules to follow when building structures, removing waste, and even when it comes to farming in all its forms.
Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination |Table 1: Water Observations (Smell, Color, Etc.) | |Beaker |Observations | |1 |Slightly cloudy, unknown chemical smell | |2 |Oil and water do not mix | |3 |No detectable difference other than vinegar smell. | |4 |Soap settles to the bottom of the beaker until stirred. Heavy soap | | |scent. | |5 |Slight cloudiness and dirt particles, no odor | |6 |Water is darker with more sediment.
6- Place only the edge of the Q-tip at the top the Flame. 7- Remove it when you see the of light being given off to avoid burning the Q-tip. 8- Clean up procedure: Discard used Q-tips to the bin, cover back compounds and put them up in a safe place, pour away distilled water in the sink, disconnect the Bunsen burner and clean it if stained,clean the lab test surroundings with paper towel to ensure no stain is left, wash your hands remove your goggles only when all equipments have been placed in safe places. Compound | Flame Colour Observation | 1 LiNO3
Safety Considerations Wear proper PPE: gloves, goggles, covered legs and feet. Dispose of the solutions in a proper hazardous waste container and not in sink. Clean the well plate with water before and after the experiment. Hazardous chemicals: Cu(NO3)2 and Ba(NO3)3 are heavy metals and should not be disposed off in the city water system. Procedure: 1) Washed and rinsed the well plate obtained from the lab stock room 2) Two drops of the anion source Na2SO4 were placed in the nine wells of the first row of well plate 3) Two drops of the anion source Na2CO3 were placed in the nine wells of the second row of well plate 4) Two drops of each of the nine Cation sources were place in the first and second rows where the anion sources were placed earlier 5) The contents of all the cells were observed and recorded in the lab notebook using the five descriptions: Clear, Cloudy, Opaque, Colorless and Colored.
Take purified water to water testing station and record the data 13. Get rid of the remaining water and clean and put away all equipment Prelab Questions - 1. A.) Mixture is a blend of two or more kinds of matter and a compound is made of two or more elements that are chemically bound. B.)
What is a peroxide killer? After bleaching the cellulosic fiber with hydrogen peroxide, the fiber is subjected a thorough hot wash cold wash and neutralization processes. These operations would remove all superficially available chemicals that were used in bleaching process. However in practice it is found that the core alkali i.e. the alkali due to the use of caustic soda or soda ash and hydrogen peroxide, wetting agents and other auxiliaries would remain in the core of the fiber processed even after 2 or 3 washes.
Water Quality and Contamination Marla Cioni-O’Hara SCI 207: Dependence of man on the environment Instructor Carpenter October 12, 2014 Water Quality and Contamination Abstract Several water quality and contamination experiments were conducted using various contaminants, filters, bottled water types and water tests. In the first experiment, water quality was examined using a soil filter. In the second experiment the filter used was a combination of sand, activated carbon, gravel and alum. The third experiment tested tap water, Dasani bottled water and Fiji bottled water for their levels of chemical contaminants. Tests suggest that water contamination is happening and that all bottled water is not equal.
Then you will fill a BURETTE with sodium hydroxide (a base) that has a known concentration. Because all the reactants and products in this reaction are colourless, an INDICATOR DYE is added to the sulphuric acid to let us know when all the acid present has been EXACTLY NEUTRALIZED by adding base. Finally, the sodium hydroxide in the burette is added to the acid/indicator solution until the indicator changes colour. (An indicator dye is a chemical that has a different colour in an acid and a base.) PROCEDURE 1.
For the pH, phosphorous, nitrogen and potassium lab we used the soil test kit to determine the different levels. We filled each comparator with a little soil, distilled water and the powder from the capsule. We shook the comparator until the color of the water changed and recorded the results. DATA: SOIL TEXTURE TABLE SOIL POROSITY TABLE SOIL PERMEABILITY TABLE SOIL pH and NUTRIENTS TABLE ANALYSIS OF RESULTS: From our results, we have discovered that garden soil is mostly made up of silt. Silt is a