EXPERIMENT 13： Extraction: Extraction with acid and alkali Objective 1. To recover the benzoic acid and p-dichlorobenzene from its mixture from its mixture by using acid-alkali extraction. 2. To determine the percentage recovery and melting point of the recovered benzoic acid and p-dichlorobenzene. Introduction Acid-base extraction is a process which purifying the acids and bases from mixtures based on their chemical properties. Acid-base extraction is performed to isolate the compounds and natural
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Exercise No. 8 CARBOXYLIC ACIDS AND ACID DERIVATIVES I. OBJECTIVES: • To investigate the physical and chemical properties of Carboxylic acid and its derivatives • To understand the reactions of carboxylic compounds and derivatives. II. EXPERIMENTAL RESULTS Solubility of Carboxylic acids in 10% NaHCO¬3 Acetic acid - formation of bubbles Benzoic acid - formation of bubbles Test for Acetic acid NaOH + Acetic acid - blue litmus paper turned red NaOH + Acetic acid + FeCl3 - red colored
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by everyday pollution from houses‚ factories‚ cars‚ and etc. This is the concept of acid rain‚ which according to EPA.gov is a broad term referring to a mixture of wet and dry deposition from the atmosphere containing higher than normal amounts of nitric and sulfuric acids. Acid rain isn’t just rain‚ its forms like hail or snow‚ which is wet deposition‚ and smoke or dust‚ which is dry deposition. The effects of acid rain are quite terrifying bringing all types of problems to the Earth‚ for example
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Acid Base Titration bre’ana March 1‚ 2013 Purpose: The purpose of this experiment is to determine the concentration of a solution of NaOH by titration with a standard solution of HCl. It was also the purpose to determine the concentration of a sample of white vinegar by titration with a standard solution of NaOH. Introduction: Using the method of titration is how the experiment gets to the conclusion of the concentration of a solution. When doing this experiment‚ measurement is very important
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Credit Recovery Biology Unit 6: History of Life on Earth Unit 6 section 3 part 1: The Paleozoic: Time of Ancient Life The Paleozoic: The Time of Ancient Life The term Paleozoic means the time of ancient ______________. Cambrian Explosion is the sudden appearance of a tremendous array of ___________life. The Paleozoic ended in the greatest mass extinction in the world________. The Earth’s crust is made of various-sized ___________. Plates are in motion relative to each other at a rate
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A carboxylic acid is an organic acid characterized by the presence of at least one carboxyl group. The general formula of a carboxylic acid is R-COOH‚ where R is some monovalent functional group. A carboxyl group (or carboxy) is a functional group consisting of a carbonyl (RR’C=O) and a hydroxyl (R-O-H)‚ which has the formula -C(=O)OH‚ usually written as -COOH or -CO2H. Carboxylic acids are Brønsted-Lowry acids because they are proton (H+) donors. They are the most common type of organic acid. Among
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effect him for the rest of his adult life. Through the characterization of Sammy‚ Updike employs a simple heroic gesture to teach us that all of our actions have consequences wand we are all responsible for our own actions. In the short story "A&P" author John Updike describes the setting and customers with great detail‚ while letting the reader make their own assumptions on Sammy’s exact motivations for quitting his job. The ending of the story leaves you to draw your own conclusions of what
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“A&P” The story “A&P” gives us a interesting‚ dynamic protagonist. We are given a short situation in which to determine his personality and his intentions. As the story progresses‚ we get a peek of Sammy’s personality‚ but his reasons are still a blur. Several other characters assist to contrast against Sammy. Though the story is short‚ we are left with a question to ask ourselves‚ why did Sammy do what he did? From the beginning of the story Updike uses Sammy’s youth and unromantic descriptive
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“Wrong Decision” In the short story “A & P” by John Updike‚ is about a young man that is miserably employed. The short story tells of a small town boy quitting his job for all of the wrong reasons. The story began with a description of a three girls who changed Sammy’s life. Sammy develops the setting to tell the story of how he is a discontent grocer‚ and he is put in to a situation of the harsh reality of the adult world after making a childish decision. Updike tells the story using the
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Education in Pride and Prejudice Vikki Chong Through encouraging the responders of the importance of self-reflection‚ Austen’s satirical eye cleverly points out the hypocrisy of her society‚ and makes an astute social commentary of the role of education. Lady Catherine de Bourgh‚ although seen as the most prominent in the social hierarchy‚ proves to be the most uncouth and brash in her manner with others. Through omniscient narration‚ Austen tells of Lady Catherine’s personality. ‘There was
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