4.3 Exercise 4 - Titrations and indicators 1. 20 cm3 of methanoic acid (Ka = 1.8 x 10-4 moldm-3) of concentration 0.10 moldm-3 is titrated against sodium hydroxide of concentration 0.05 moldm-3. a) Calculate the pH of the solution: i) initially ii) after 10 cm3 of the alkali has been added iii) after 20 cm3 of the alkali has been added iv) after 30 cm3 of the alkali has been added v) after 50 cm3 of the alkali has been added b) Sketch a pH titration
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CASE STUDY: SENSODYNE OVERTAKES COLGATE IN SENSITIVE CATEGORY INTRODUCTION The sensitive toothpaste segment accounts for less than 10% of the country ’s Rs 5‚400-crore toothpaste market at Rs 470 crore‚ but is growing at 50% a year. Oral care giant Colgate Palmolive‚ which controls about 53% of the country ’s toothpaste market‚ has been selling its Sensitive brand in India since the last seven years. India had very low levels of awareness on the condition of tooth sensitivity. Over the past
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Experiment 21: Reaction of some Akyl Halides Completed on November 13‚ 2012 Purpose The purpose of this experiment was to examine reactiveness of 10 organic compounds under both SN1 and SN2 conditions. Table of Chemicals Compound Structure Molecular Weight (g/ml) Boiling Point (°C) Melting Point (°C) Density (g/ml) Safety 1-bromobutane 137.03 102 -112 1.269 Flammable‚ irritant 2-chloro-2-methylpropane 92.57 51 -26 0.89 Flammable‚ irritant acetone 58.08 56.5 -95 0.793 flammable
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The Stereochemistry of Bromine Addition: Bromination of trans-Cinnamic Acid Pitak Chuawong Objectives 1. To perform bromination of trans-‐cinnamic acid 2. To investigate stereochemistry of bromination reaction Introduction Alkenes undergo electrophilic addition to give alkyl halides. When bromine is used as a
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Safety measures in the chemistry laboratory The mentors are responsible for instructing the competitors as to the risks to which they are subjected when working in a chemistry laboratory‚ as well as to the basic safety measures‚ and first aid. Specific behavioral and safety measures must be obeyed to prevent accidents. Rules in the lab: * Use protective clothing all the time (e.g. lab coat and safety glasses) * Use a hair band to keep your hair away from your face. *
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Chemistry of Fire and Firefighting Firefighting in the early 1700’s differed from the ways that we fight fires today. In the past‚ man-kind didn’t know the chemistry of fire and the different kinds of fire that ignite. Technology has improved a lot from the 1700’s. When technology improved‚ so did the techniques of fighting fires. Firefighters have learned that fires can start from something as simple as a frayed wire and can start from something as complex as a lightning bolt. Technology
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Target Market Demographic Age : 18 to 45 years old Gender : Male and Female Education : SPM and above Occupation : Students to working adults Income Range : Middle and Upper class Race & Ethnicity : All races Geographic Location : Urban and Sub-urban Physiographic Perception : Consumers who concern about
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segmentation‚ targeting‚ positioning‚ differentiation and branding For many organizations today to be successful they must know what consumers needs are‚ so as to satisfy them successfully and profitably to avoid wastages of resources. For these organizations to be successful they have to undertake segmentation‚ so as to know their target market and also to know the available competitors in the market producing the same goods. As a matter of fact‚ for Colgate to be successful they must segment
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Abstract In this experiment‚ the nature of linkage isomers will be observed on the example of nitritopentaamminecobalt(III) Chloride and nitropentaamminecobalt(III) Chloride. Their relative stability will be compared on standard conditions and the infrared spectroscopy of both the isomers will be obtained to analyze the characteristic absorption bands for the nitro and nitrito group. Yield for nitritopentamminecobalt(III) Chloride was obtained to be = 1.9221 g(73.24 %) and yield for nitropentamminecobalt(III)
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Graded Assignment MidUnit Test‚ Part 2 Answer the following questions. You may use the periodic table in the Chemistry: Problems and Solutions book for this test. When you have finished‚ submit this assignment to your teacher by the due date for full credit. (5 points) Score 1. For an experiment‚ a biology student makes 1 liter of a solution containing the following substances‚ which are shown in the table below. Using the given information‚ fill in the missing parts of the table for each substance by
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