Experiment ANALYSIS OF SODA ASH The CCLI Initiative Computers in Chemistry Laboratory Instruction LEARNING OBJECTIVES The objectives of this experiment are to . . . • understand the titration curve for a diprotic base. • use the titration curve to calculate the percent of Na2 CO3 in an unknown sample of soda ash. BACKGROUND Sodium carbonate is an important industrial chemical. It is used in the manufacture of soap‚ glass‚ paper and as a source of alkalinity‚ that is‚ as a
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Weekly iLab iLab: Exploring the Microbiology Lab Section 1 Lab Safety 1. There are four safety equipment items that a lab should have. Identify two of these four items. (2 pts) Biological Safety Cabinet‚ Eyewash and shower 2. Identify one of the three ways to keep your work area safe. (1 pt) Keep your workspace free of all unnecessary materials 3. There are five recommendations for dressing properly in a lab environment. Name two of these recommendations. (2 pt) Avoid loose
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acids and bases and producing water and a salt. Acids contain Hydrogen Ions and Bases contain Hydroxide Ions. The best example of neutralization in our bodies is the carbonic acid bicarbonate buffer. It contains acid and base and maintains our bloods Ph level. If our blood becomes acidic or basic this buffer neutralizes conditions. 4) C6H12O6+6O2-->6CO2+6H2O a) Carbon atoms in glucose are being oxidized b) Oxygen is being reduced Unit 1 Lesson 2 Key Questions 5)a) Carbohydrates monomer(s)
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Separation of Amino Acids by Paper Chromatography Chromatography is a common technique for separating chemical substances. The prefix “chroma‚” which suggests “color‚” comes from the fact that some of the earliest applications of chromatography were to separate components of the green pigment‚ chlorophyll. You may have already used this method to separate the colored components in ink. In this experiment you will use chromatography to separate and identify amino acids‚ the building blocks of proteins
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experiment will take place over a one month period. I will take two pennies (minted before 1983) and place each one in their own glass. (U.S. Environmental Protection Agency. n.d.) I will then place ½ cup of water with a pH level of 4.5 in one glass and a ½ cup of water with a pH level of 5.6 in the other glass. After the one month period‚ I will note the differences between the two pennies and determine if the penny in the acidic water is more corroded then the penny in “normal” water. That will
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ranges for pH and carbon dioxide in the blood.___ ___ ___ Describe what happened to the pH and the carbon dioxide levels with hyperventilation. How well did the results compare with your prediction? ___ ___ ___ Explain how returning to normal breathing after hyperventilation differed from hyperventilation without returning to normal breathing. ___ ___ ___ Describe some possible causes of respiratory alkalosis. ___ ___ ___ Activity 2 Rebreathing Describe what happened to the pH and the carbon
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TITLE PAGE PREPARATION AND CHARACTERIZATION OF SODIUM SALICYLATE OINTMENT INTENDED FOR TOPICAL AND SYSTEMIC DELIVERY BY MUOBIKE MAKUO 2005/136609 IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF DEGREE OF BACHELOR OF PHARMACY (B. PHARM) OF THE UNIVERSITY OF NIGERIA‚ NSUKKA. DEPARTMENT OF PHARMACEUTICAL TECHNOLOGY FACULTY OF PHARMACEUTICAL SCIENCES UNIVERSITY OF NIGERIA‚ NSUKKA. PROJECT SUPERVISOR: DR. I. V. ONYISHI OCTOBER‚ 2012. APPROVAL PAGE This is to certify
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1. Identify the natural sources of sulphur dioxide and oxides of nitrogen. SO2‚ natural: - Geothermal hot springs and volcanic activity are natural sources of SO2. - In the process of decaying of organic matter some bacteria will produces hydrogen sulphide as a waste product which will oxidise‚ forming so2. - Phytoplankton release dimethyl sulphide (DMS) into the atmosphere‚ when this is oxidised it forms sulphuric acid. NOx‚ natural: - Lightning activity generates high temperatures to allow
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The Power of Vital. Undoubtedly‚ the most important component to human health and vitality of oxygen. In fact‚ human life would not be possible without it: oxygen produces ATP (adenosine triphosphate) and within ATP our bodies would immediately shut down. When a person breathes‚ there is an exchange of carbon dioxide and oxygen. The oxygen‚ which is taken in by the body from the atmosphere around us‚ is picked up by the hemoglobin in the blood and distributed to all of the body’s trillions of
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13B—Describing Polyfunctional Bases CO3-2 + H2O ( HCO3- + OH- Kb1 = [HCO3-] [OH-] = Kw = 2.13e-4 [CO3-2] Ka2 HCO3- + H2O ( H2CO3 + OH- Kb2 = [H2CO3] [OH-] = Kw = 6.7e-4 [HCO3-] Ka2 13C—Finding the pH of Solutions of Amphiprotic Salts -Amphiprotic salts are formed during neutralization titration of polyfunctional acids and bases -An amphiprotic salt is a species that can act as an acid and as a base when dissolved in a suitable solvent
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