Name: Citric acid Chemical Name: 2-hydroxypropane-1‚2‚3-tricarboxylic acid Chemical Formula: C6H8O7 Chemical Structure: pH: 4.18‚ 3.90‚ 3.57 Classification: Weak acid Uses: It is a natural preservative/conservative and is also used to add an acidic or sour taste to foods and drinks. It is also used mainly as an acidifier‚ as a flavoring‚ and as a chelating agent. Name: Vinegar acid Chemical Name: Acetic acid or ethanoic acid Chemical Formula: C2H4O2 Chemical Structure:
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August 28‚ 2009 [PROBLEM SET FROM R. CHANG TEST BANK] Chapter 16 Acid-Base Equilibria and Solubility Equilibria Student: ___________________________________________________________________________ NOTE: A table of ionization constants and Ka’s is required to work some of the problems in this chapter. 1. In which one of the following solutions will acetic acid have the greatest percent ionization? A. B. C. D. 2. Which one of the following is a buffer solution? A. B. C. D. E. 3. 0.40 M HCN and
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expected melting point. After its temperature reached the plateau‚ the temperature increment was set at 1°C per minute‚ and the melting point range of 152°C-154°C was recorded. After standardizing the melting device‚ a small sample of unknown carboxylic acid was placed in a capillary tube‚ and an arbitrary plateau of 200°C was set. When the sample started to melt at 150°C‚ another capillary tube containing a small amount of unknown sample was placed in the melting device‚ and the plateau was set to 135°C
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
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18.1.4 – 18.1.6 CALCULATIONS INVOLVING ACIDS AND BASES Review of Important formulas pH = ‐ log10[H+] [H+] = 10‐pH pKa = ‐ log10 Ka Ka = 10‐pKa pOH = ‐ log10[OH‐] [OH‐] = 10‐pOH pKb = ‐ log10 Kb Kb = 10‐pKb The ionic product of water = Kw = [H+] x [OH‐] = 1.0 x 10‐14 mol2 dm‐6 at 298 K The expression varies with temperature
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with having to choose a film to write this journal on there was no other option for me than my favorite Kubrick film‚ A Clockwork Orange‚ a film that shocked a nation with its explicit visuals and storytelling. In this paper I will touch on what I see as the film’s cultural invisibility‚ narrative‚ and lastly genre conventions. Cultural Invisibility A Clockwork Orange is a film that I feel is very open to interpretation when it comes to its cultural invisibility. The film depicts a young delinquent
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Extraction of R’-NH2 For both of the organic acid and organic base extraction‚ the addition of the respective inorganic acid or inorganic base (HCl or NaOH) to the three-component mixture caused an immiscible appearance of the solution in the separatory funnel. By briskly shaking the separatory funnel with the mixed components created a build up of pressure which was released through the stopcock forming small disappearing bubbles within the tip of the separatory funnel. Once the funnel was placed
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Orange Leaf Froyo 5 C’s Customer: Orange Leaf has a wide variety of customers‚ ranging from very young children‚ all the way up to the elderly. Anyone who enjoys a delicious treat can be a customer at Orange Leaf! Company: The Orange Leaf Company’s mission statement is “We work hard to make the best froyo you’ve ever tasted and are committed to becoming a valuable partner in your community.” Orange Leaf is unique in that they not only strive to be the best frozen yogurt company around‚ but their
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The dystopian novel‚ A Clockwork Orange‚ written by Anthony Burgess‚ was originally published in 1962. It takes place in the future‚ where the streets are overrun with violence and crime. The main character‚ Alex‚ commits horrible crimes‚ including rape and murder with his group of friends. After breaking into a house‚ Alex is arrested and undergoes an experiment called Ludovico’s Technique. He can no longer make immoral choices‚ and feels sick when he thinks about any wrongdoing. He is vulnerable
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A Clockwork Orange Response Part 3 Chapters 4-7 A theme conveyed in the last chapter of Anthony Burgess’s novel‚ A Clockwork Orange is about the transition from his childhood to becoming an adult. From the beginning‚ Alex was a violent‚ cruel‚ and immature teenager and now embraces a new image of living a peaceful and mature lifestyle. Most importantly‚ he intentionally wants to change his true image so that his future son will be able to follow his footsteps. This is a prime example of how Alex’s
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