Salt Water Pool

Fill a test tube about 1/3 full with cold tap water for use in step 34.

Check pH Levels: pH measures the relative alkalinity of your hot tub’s water, in which 7.0 is a perfectly neutral level. The ideal pH level should stay between 7.2 and 7.8, even throughout the winter, to prevent corrosion and other expensive damage.

For this lab, we must be sure to always wear our safety glasses whenever we are in the laboratory and wear gloves when we are conducting an experiment. Benzoic acid and sodium benzoate used in this experiment can be mild irritants to the skin. We must be careful not to get them on our skin or

Chlorine can be obtained from seawater by using electricity. What is the name of this process? (1)

Problem: How does the electronegativity of 1.25 mol/L of hydrochloric acid, 1.25 mol/L of sulphuric acid, and 1.25 mol/L of nitric acid, affect the rate at which magnesium will react at room temperature(21°C)? Background: A chemical reaction is the rate at which a substance goes through a change and it is transformed into another substance that has different compositions as well as properties.1 The rate at which a chemical reaction occurs depends on many factors, some of which include the concentration of a reactant2, temperature2, collision theory and electronegativity3. Concentration of a reactant effects the rate of reactivity.

Pool shock contains calcium hypochlorite while common household bleach contains sodium hypochlorite. “Chlorine shock basically involves raising the chlorine to very high levels in order to destroy any contaminants in the water” (“How Often Should I Shock My Pool?”). To explain, the products being utilized in this experiment both contain chlorine. Keeping this in mind, household bleach can possibly be a good alternative for cleaning a contaminated pool, if this experiment shows results in favor. For this experiment then, the independent variable will be the time in hours and depended variable will be the pH of each individual pool being used.

People claim saltwater is horrible for you; and no matter what can kill you. One problem is that it causes dehydration. A website called Livescience states, “If you took a few gulps of ocean water, for example, your body would have to urinate more water than you drank to get rid of all that extra salt, leaving you thirstier than you were before.” Docastaway states, “A kidney cannot make urine from a concentration of salts of more than 2%.” The saltwater is 3% salt. Therefore, drinking it will leave us thirstier. Drinking salt water for thirst just leaves us more empty in the end. Reasons on why salt water can be good for you is that it can give you a better sleep. Sun Gazing Website states By reducing their levels salt helps to calm and soothe

The pool inspection was done on an outdoor commercial pool that had a valid operating permit and was owned by Delta Town Inn & Country Inn. The pool deck area was enclosed within a metal fence with 3 secured entrances that required a key to access. This fence acts as a barrier to the pool, so that foreign contaminants, such as animals and their feces, do not come into contact with the pool and affect the microbiological safety of the pool. In addition to reducing potential contamination, the fence and gate also prevents young children, without supervision, from entering the pool and drowning (Ministry of Health, 2014). The pool deck was constructed out of concrete that had a gritty, sandy feel to it and had several drains located around

Cartridge filters should be opened up and cartridge rinsed out. Green or cloudy water will clog a filter very quickly so more backwashing will clear up a pool faster. If using a D.E. filter, make sure the proper amount of D.E. is replaced after every backwash.

Drinking salt water has it’s pros and cons. The website National Oceanic and Atmospheric Administration (NOAA) states that drinking seawater can be deadly. When humans drink salt water their cells are taking in water and salt. While people are able to ingest small amounts of salt, the amount of salt in seawater is a lot more than what what the human body can take. When we consume salt as a part of our daily diets, we also drink liquids, which helps dilute the salt and keeps it at a healthy level. Human kidneys can only make urine that is less salty than water. Therefore to get rid of all the extra salt taken in by drinking seawater you would have to urinate more water than you drank. Leading to dehydration, which would cause death to someone

Ocean water sometimes is called saltwater because of its salt content. Sodium chloride, or table salt, gives ocean water its salty taste. Sodium chloride, on average, makes up about 90 percent of the salt content of ocean water. Other mineral salts found in ocean water include salts of magnesium, calcium, potassium, and sulfate. The total salt content, or salinity, of ocean water is on average about 35 parts per thousand, or 3.5 percent. This means that a liter of ocean water contains about 35 grams of various salts. Ocean water also contains many other important minerals and nutrients that support life. Some of these are dissolved compounds of nitrogen and phosphorous. Some, like carbon dioxide and oxygen, are gases that are dissolved in ocean

Figure 3 above illustrates the concentration of Cl- in different types of water in addition to the regulation limits designed by Kahramaa. The maximum concentration was observed in Aqua gulf water to be (47.5

If a pool is not properly sanitised, then it will become unsafe and unhygienic to use. If a pool were to be sanitised correctly, then the water will be kept at a correct pH level. The pH levels of a pool are one of the most important elements when looking at how to maintain a safe pool. It affects every other chemical balance in the pool water, however on a hot summer day in Brisbane, how does the sunlight affect the chlorine levels of the pool? How does this affect the pH levels?

Put three drops of hydrogen peroxide (3 %) on it (after dabbing dry with paper towel) to observe the effect of pH on reaction activity

Do not use the test for samples containing more than 2000 mg Cl–/L. Techniques designed to measure COD in saline waters are available.1,2 Halide interferences may be removed by precipitation with silver ion and filtration before digestion. This approach may introduce substantial errors due to the occlusion and carrydown of COD matter from heterogenous samples. Ammonia and its derivatives, in the waste or generated from nitrogen-containing organic matter, are not oxidized. However, elemental chlorine reacts with these compounds. Hence, corrections for chloride interferences are difficult. Nitrite (NO2–) exerts a COD of 1.1 mg O2/mg NO2–-N. Because concentrations of NO2– in waters rarely exceed 1 or 2 mg NO2–-N/L, the interference is considered insignificant and usually is ignored. To eliminate a significant interference due to NO2–, add 10 mg sulfamic acid for each mg NO2–-N present in the sample volume used; add the same amount of sulfamic acid to the reflux vessel containing the distilled water blank. Reduced inorganic species such as ferrous iron, sulfide, manganous manganese, etc., are oxidized quantitatively under the test conditions. For samples containing significant levels of these species, stoichiometric oxidation can be assumed from known initial concentration of the interfering species and