The objective of this lab is to determine the hardness of water‚ using the data collected from each titration performed with the unknown sample. Since the hardness of water arises from the presence of metal ions‚ we can use disodium salt of EDTA and the indicator Eriochrome Black T to determine the concentration of M 2+ ( Mg 2+ or Ca 2+) metal ion impurities. Chemical principle or theory involved in this lab: To determine waters hardness we will use a technique called a chelometric titration
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Lab 7: Determination of Water Hardness Using a Titrator Name: Kyndal Petrie Lab Partners: None Date of Experiment: July 19‚ 2013 Location: My house Course Number: Che112 Abstract: This experiment was to determine the hardness of the local water supply. I determined that from the 1mg of EDTA used to turn the mixture blue‚ that the water from my tap is moderately soft. Experiment and Observation: In this experiment I developed a familiarity with the concept
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ago‚ people turn to the tap for drinking water. Now‚ most people‚ both young and old‚ drink water from bottles. In fact‚ the demand for bottled water is so great that it has become a multimillion-peso business in the country today. Why is there a substantial growth in the demand for bottled water? The main reason is the increasing health consciousness of the people. Many people prefer bottled water because they question the cleanliness of tap water. The quality of tap water has been decreasing. To
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the topic of tap water and bottle and why you should drink tap water. What are the types of waters and the facts of bottled water and tap water? What are the standards and regulations over bottled and tap water? Why you should drink tap water? Based on research I believe that tap water is a better choice because of the FDA regulations and standards places on it‚ the effect it has on the environment and the overall cost and health effects of tap water. Tap Water Vs Bottled Water What are
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Investigation - Solution Colour and Ion Concentration Aim: To investigate whether solution colour can be used to reliably determine the concentration of coloured ions in a solution. Hypothesis: the concentration of permanganate ions in the solution is inversely proportional to the percentage transmission of light through the solution. Dependent variable: concentration of permanganate ions. Independent variable: percentage transmission of light through the solution. Equipment: 20 ml
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Elizabeth Young BIO 220 January 27‚ 2013 Trent McDowell Filter This: The Advantages of Bottling Your Own Water Water‚ life’s most essential element. Is your consumption of this life giving liquid eradicating the Earth as we know it? Bottled water has become a huge trend in the US and the world today. “In 2007‚ Americans spent $11.7 billion on 8.8 billion gallons of bottled water‚” (Palliser‚ 2010‚ p1). They are on the shelves of every convenience store‚ supermarket and vending machine.
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It is no secret that bottled water costs more than tap water‚ but is it reasonable to state it costs 1‚000 times more? It is very difficult to give an exact number for the difference between the two‚ but 1‚000 to 2‚000 times more is a reasonable estimate. This is based on the fact that on average‚ a gallon of bottled water costs $1.22. Protesters against bottled water industries use the highest prices of water bottles they can find as a way to show a bigger contrast between the two‚ essentially
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Filter tap water is an affordable way of reducing many common water contaminants. This includes things like lead and other byproducts leftover from treatment processes such as chlorine. Doing so is important because over half of the chemical found in your water aren’t regulated. Anyone who’s concerned about ingesting these chemicals and picking up their ill health effects should filter their tap water. Setting this up in your home is relatively easy and inexpensive to do thanks to today’s technology
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Tap Water should be the Water of Choice Scientists have warned for years that when bottles are stored in warm and hot temperatures‚ the plastic been showed to leach chemicals into the water. There are increasing effects of polyethylene terephthalate bottles on our environment. Even the price of bottle water is increasingly outrageous. With the economy the way it is‚ why spend the money on bottle water. The EPA conducted studies on chemicals found in bottled water. Even though the studies found
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Complexometric Determination of Water Hardness Lab Report Introduction: In this lab the use of disodium salt of EDTA is used to determine the concentration of M^2+ metal ion impurities in hard water by chelometric titration. The indicator Eriochrome Black T will help detect when you EDTA has completely chelated the metal impurities. Chemical Principle: A complex ion consists of a metal ion with Lewis bases attached to it. These Bases form strong covalent bonds with the central complex ion in which
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