Abstract. This report is about how to standardize a Sodium Hydroxide (NaOH) solution by titrating it with pure sample of Potassium acid Phthalate (KHC8H4O4). This experiment has two sections. The first section is to standardize the Sodium Hydroxide by titration. Three sample of 0.7 – 0.9 g of solid KHP are place into each of the three numbered Erlenmeyer flasks. 50 ml of distilled water are added to each three of it from graduated cylinder and constantly shake it until the KHP solution are completely
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Slope Essay For years Mathematicians have studied and found various mathematical equations. One thing they’ve came across is numerous equations for slope. You maybe asking‚ what is slope? Slope is rise over run.To find slope (m=slope) on a graph‚ you draw and label your x (horizontal) and y (vertical) axis on a xy-coordinate plane. When you draw your two lines they should meet at right angles at a point zero. The axis is divided into four quadrants. Then you find any two points ( (0‚0) and (2‚1)
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hand. From here‚ the refluxing began and ended once the bromobenzene addition was completed. The second phase of the experiment involved the reaction of the phenylmagnesium bromide with assigned carbonyl compound. Appropriate amounts of benzaldehyde‚ benzophenone‚ or methyl benzoate based on the amount of bromobenzene used should be added to a dry beaker along with anhydrous diethyl ether. The mixture was poured into the addition funnel‚ added to round bottom flask drop wise‚ allowed to reflux for
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“The Synthesis of Zinc Chloride”‚ what a peculiar name for a lab that does not even involve synthesis. Synthesis‚ by definition‚ is when two elements are combined in a chemical reaction‚but that is not the case. In this lab we are combining zinc‚ an element‚ and hydrochloric acid‚ a compound‚ but combining a compound and an element is not synthesis‚ it is single replacement. We are taking zinc and hydrochloric acid and making zinc chloride and hydrogen‚ a single replacement‚ but what occurred during
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Journal of Corporate Finance 11 (2005) 85 – 106 www.elsevier.com/locate/econbase Additions to corporate boards: the effect of gender Kathleen A. Farrell a‚*‚ Philip L. Hersch b a Department of Finance‚ University of Nebraska-Lincoln‚ Lincoln‚ NE 68588-0490‚ USA b Department of Economics‚ Wichita State University‚ USA Received 1 November 2003; accepted 1 December 2003 Available online 20 April 2004 Abstract During the decade of the 1990s the number of women serving on corporate boards increased
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The Nervous System: Membrane Potential 1. Record the intracellular and extracellular concentrations of the following ions (mM/L): Intracellular Extracellular Sodium (Na+) Potassium (K+) Chloride (Cl–) 2. Excitable cells‚ like neurons‚ are more permeable to ___________ than to ___________. 3. How would the following alterations affect the membrane permeability to K+? Use arrows to indicate the change in permeability. a. An increase in the number of passive K+ channels
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Also known as "benzoate of soda‚" sodium benzoate is an FDA-approved‚ polyunsaturated fat that has been used by food manufacturers for over 80 years to inhibit microbial growth. As a food additive it is used as a preservative‚ effectively killing most yeasts‚ bacteria and fungi. Sodium benzoate is effective only in acidic conditions (pH < 3.6) making its use most prevalent in foods such as preserves‚ salad dressings (vinegar)‚ carbonated drinks (carbonic acid)‚ jams (citric acid)‚ fruit juices (citric
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Sodium hypochlorite‚ also known as chlorine bleach‚ soda bleach‚ or household bleach is a chemical with the formula NaClO. A common way sodium hypochlorite gets into the San Francisco bay is through daily household cleaning products such as laundry bleach. In a survey conducted by The Clorox Company‚ it was found that four out of five households use sodium hypochlorite bleach for their laundry. Since laundry detergent companies are not required to list every ingredient‚ customers are often not aware
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Hydrolysis of tert-butyl Chloride in different solvents Practical conducted on 5 March‚ 2013 Reported by Pham Vu Hung on 10 March‚ 2013 Introduction: This practical is meant to measure the rate of reaction of the hydrolysis of tertiary-butyl chloride –a colorless‚ liquid organic compound at room temperature that is sparingly soluble in water - in water/acetone and water/isopropanol mixtures. Since there are many influencing factors for the rate of reaction‚ all are kept constant but the
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Nonconformity‚ Corrective Action and Preventive Action in EMS ISO 14001 The intent of 4.5.3 is that the organization put in place procedures for‚ 1) identifying actual and potential nonconformities to EMS requirements‚ 2) taking appropriate corrective or preventive action‚ and 3) reviewing the effectiveness of corrective or preventive actions taken. The nonconformity requirement of ISO 14001:1996 was a passive requirement in that it was only triggered when a nonconformity came to the attention of
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