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    The Element: Chlorine

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    Element: Chlorine General Information We researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic weight of 35.453. It has a valence number of 3. The element has 3 energy levels. Chlorine exists as a greenish-yellow gas at normal temperatures and pressures. Chlorine is second in reactivity only to fluorine among the halogen elements. Chlorine is a nonmetal. It is estimated that 0.045% of the earth’s crust and 1.9% of sea water are chlorine. Chlorine

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    Chlorine Lab

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    Determination of the concentration of chlorine ions Aim: To compare the concentration of chloride ions in pool and tap water respectively. Background: Tap water contains a variety of dissolved ions such as Ca2+‚ Mg2+‚ Na+‚ HCO3- and Cl-. In this experiment we will determine the concentration of the Cl- ions‚ and comparing it to the concentration found in a sample of pool water. The method used is the standard one for determining the concentration of chloride ions: titration with

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    Chlorine and Mark

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    precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark ) (a) Sandmeyer’ reaction (b) Fittig reaction (c) Wurtz reaction (d) Williamson’s synthesis (Q.3) Substitution of chlorine takes place readily at higher temperature in : ( 1 mark ) (a) CH3CH=CH2 (b) H2C=CH2 (c) HC C (d) None of the above (Q.4) (CH3)3CMgBr on reaction with D2O gives: ( 1 mark ) (a) (CH3)3CD (b) (CH3)3COD (c) (CD3)3CD (d) (CD3)3OD (Q.5) The silver

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    Chlorine and Mole Ratios

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    ractice Problem #1: Oxygen gas can be produced by decomposing potassium chlorate using the reaction below. If 138.6 g of KClO3 is heated and decomposes completely‚ what mass of oxygen gas is produced? KClO3 (s) --> KCl (s) + O2 (g) [unbalanced] Answer to Practice Problem #1: 1. Balance your equation first. 2KClO3 (s) --> 2KCl (s) + 3O2 (g) [balanced] 2. Convert from grams to moles using molar mass.

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    Chlorine Research Paper

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    CHLORINE Chlorine is an element I would like to present today. It is discovered in 1774 by Carl Wilhelm Scheele and was named by Sir Humphry Davy in 1810‚ after a Greek word‚ khlôros‚ which means greenish yellow. Chlorine is in the halogen group in the periodic table with an atomic number of seventeen. Pure chlorine is yellowish-green but most common compounds with chlorine are typically colourless. The element itself was first produced in 1774 by Carl Wilhelm Scheele‚ by heating hydrochloric acid

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    Chlorine and Cu Zn

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    26.5g sample of impure paracetamol contains 24.5g of pure paracetamol. Calculate the % purity of this paracetamol. %purity = pure/impure x 100 = 24.5/26.5 x 100 = 92.5% 4. When 11.50g of sodium reacts with excess chlorine‚ 22.3g of sodium chloride is made. 2Na + Cl2 2NaCl Ar : Na = 23‚ Cl = 35.5 Calculate: a.

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    Water Disinfection Chlorine and Ozone‚ Which is More Efficient The use of chlorine and ozone in water disinfection is prevalent throughout the modernized world. Both options allow us to take water that was previously thought unusable and to change it into potable water. These options allow us to eliminate chemicals‚ microorganisms and disease from water such as cholera‚ e-coli‚ cryptosporidium‚ giardia‚ enterovirus‚ and many more including metals. There are pros and cons to both treatment processes

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    iLab‚ Week # 3 ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The purpose of this lab experiment is to determine the atomic weight of magnesium by measuring the amount of hydrogen gas evolved when hydrochloric acid reacts with magnesium. The reaction is as followed: Mg + 2HCL  H2 + Mg2+(aq) + 2Cl-(aq) In this experiment there is a one to one relationship between the number of moles of hydrogen gas evolved and the moles of magnesium metal consumed in the reaction. Therefore in the finding of

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    ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The main purpose for this experimental lab is to determine the atomic weight of magnesium‚ as well as an underlying purpose in determining the relationship between moles evolved and consumed. This can be demonstrated by measuring the hydrogen gas evolved by performing a chemical experiment when hydrochloric acid reacts with the magnesium. The formulated reaction includes; Mg + 2HCl → H2 + Mg2+(aq) + 2Cl- (aq) The major findings contributing

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    QUALITY CONTROL LABORATORY Mam Dawn Assay of HCL Aqueous Alkalimetry Direct titration 0.1N NaOH Methyl Red TS HCL + NaOH NaCl + H2O Assay of Diluted H3PO4 Aqueous Alkalimetry Direct titration 0.1N NaOH Thymolphthalein TS H3PO4 + 2NaOH Na2HPO4 + 2H2O Assay of H3BO3 Aqueous Alkalimetry Direct titration 0.1N NaOH Phenolphthalein TS H3BO3 H+ + BO2- + H2O

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    next 5 minutes. How do manufacturers bleach something into light colors? How do things in white are easily to get yellow? Why do they do so? The reason of getting yellow. The solution to the problem. Difference between sulfide bleach and chlorine bleach. PPT 3 We heard words such as “bleach for unbleachables” from TV commercials. But what exactly is bleaching? Does it mean making things turn into a lighter color or does it mean making thing become purely white? According to Wikipedia

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    Chlorine

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    Chlorine Zachary Grindle Chemistry 1301 Professor Bott June 24‚ 2010 Chlorine has an atomic mass of 35.453‚ atomic number 17‚ is a member of the halogen family (VIIA)‚ and its symbol is “Cl”. Chlorine contains 17 protons and 18 neutrons in is nucleus. There are two isotopes for chlorine as well; Cl-35 and Cl-37. Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Sheele. Sheele came upon chlorine when he put a few drops of hydrochloric acid (HCl)‚ then known as muriatic acid

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    to urgent coughs and gasps for air. I researched the issue extensively and utilized the osteopathic medicine students‚ athletic trainers‚ databases and library resources to collect information. The insurmountable research proved my hypothesis that chlorine was causing the worsening of asthma symptoms throughout the year.

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    Chlorine Kid Case Study

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    Chlorine kid is 35.45 years old. Chlorine kid never ages after his incident from getting his powers‚ so‚ he’s technically only 4 years old. Chlorine kid got his powers after swimming in a swimming pool with too much chlorine and this is how it happened. Just that morning before chlorine kids parents took him swimming the manager of the pool refilled the pool with chlorine‚ while he was doing that the chlorine bucket slipped out of his hands and the chlorine overflowed the pool because of how much

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    Analytical 1

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    DATE; 13/02/14 TITLE: ESTIMATION OF “AVAILABLE CHLORINE” IN BLEACHING POWDER Aims and Objectives: 1. To determine the amount of chlorine in bleaching powder using titrimetric analysis. 2. INTRODUCTION Although chlorine is one of the most widely distributed elements‚ yet its discovery is of relatively recent date. The famous Swedish chemist‚ Scheele‚ is given credit

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    Chemistry Issues Investigation Issues Question: “Should the chlorination of water be banned in Australia?" Introduction Chlorine is a halogen abundant in the natural environment‚ typically found in the form of ionic chloride compounds. Once isolated into its elemental form‚ chlorine has a high oxidising potential‚ resulting in its use as a water disinfectant globally. Although water chlorination has significantly improved public health‚ recent studies suggest a correlation between the consumption

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    Assignments

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    Science Assignment | March 22 2013 | Jessica Finney | Ms Croaker – Sc743A | Science Part A Assignment Choose one scientist involved in formulating the modern periodic table and describe why their work made a significant contribution to the development of the periodic table. Dmitri Mendeleev’s contribution to the modern day periodic table is widely renowned in the history of chemical science. Mendeleev was the creator of the periodic table; arranging 63 known elements in order of their

    Free Periodic table Chemical element Chlorine

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    Viet Vu

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    static‚ Le Chatelier’s Principle) 2 pH 4 Chlorine 5 Equilibrium Constant 6 Wavelengths and UV Rays 6 Rationale 7 Materials and Method 8 Results 14 Calculations 18 Discussion 24 Conclusion 25 Bibliography & Referencing 25 Aim To investigate if loss of concentration of chlorine in a swimming pool is dependent upon the wavelength of the

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    Chemistry Life in Daily Life

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    * Fluoridation Of Water * Chlorofluorocarbons * Chlorine * Introduction * Uses Of Chlorine * Chlorine And Organic Compounds * Bromine * Introduction * Halogen Lamps * Iodine * Introduction * Uses And Applications * Astatine * Introduction * Uses And Applications Introduction & daily life applications of halogens INTRODUCTION: * Table salt‚ bleach‚ fluoride in toothpaste‚ chlorine in swimming pools—what do all of these have in common?

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    carbonate out utilising the common-ion effect. 5. Pre-chlorination – In many plants the incoming water was chlorinated to minimise the growth of fouling organisms on the pipe-work and tanks. Because of the potential adverse quality effects (see chlorine below)‚ this has largely been discontinued.[citation needed] [edit]pH adjustment Distilled water has a pH of 7 (neither alkaline nor acidic) and sea water has an average pH of 8.3 (slightly alkaline). If the water is acidic (lower than 7)‚ lime

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