BasesLewis acids and bases play an important role in chemical reactions because‚ except oxidation-reduction reactions‚ almost every reaction could be categorized as an acid-base reaction. Bases in water solutions show certain specific characteristics: bitter taste‚ feel slippery‚ and turn litmus paper blue. Acids in water solutions show these most common characteristics: sour taste‚ react with metals‚ and turn litmus paper red. The understanding of chemical reactions‚ such as acid and base interactions‚
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Two key factors that contribute to the ease of deprotonation are the polarity of the H—A bond and the size of atom A‚ which determines the strength of the H—A bond. Acid strengths are also often discussed in terms of the stability of the conjugate base. Sulfonic acids‚ which are organic oxyacids‚ are a class of strong acids. A common example is toluenesulfonic acid (tosylic acid). Unlike sulfuric acid itself‚ sulfonic acids can be solids. Superacids are acids stronger than 100% sulfuric acid. Examples
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Purpose: To find out if the Unknown substances are bases or acids. Materials: goggles aprons paper for data table graduated cylinder unknown I substance beakers/test tubes stirring rod litmus paper pH indicator paper pH color chart phenolphthalein scoopula eye-dropper digital pH meter magnesium ribbon calculator unknown II substance forceps sodium bicarbonate Procedures: Test the pH of the Unknown substances with litmus paper and pH indicator paper and match to color chart
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avoided if possible. Secure Base Parents are the secure base for their children; as a secure base the child is able to explore the world and is assured that
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CHEMICAL REACTIONS: ACID-BASE BUFFERS Short Overview Acids and bases represent two of the most common classes of compounds. Many studies have been done on these compounds‚ and their reactions are very important. Perhaps the most important reaction is the one in which an acid and base are combined‚ resulting in the formation of water (in aqueous solution) and a salt; this reaction is called neutralization. A buffer solution is a solution that contains both an acid and a salt
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Five major theoretical bases for counseling in psychology are biological‚ learning‚ cognitive‚ psychodynamic‚ and sociocultural. Each one of these perspectives searches for answers about behavior through different techniques and researching a clients childhood or adult life experiences looking for answers to different kinds of questions. Due to the different types and styles of counseling approaches‚ each counselor forms their own thoughts and explanations. The premise behind the biological perspective
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Acid and Base Titrations: Preparing Standardized Solutions Introduction: This experiment focuses on titrations of acids and bases. A titration depends on addition of a known volume of solution and is a type of volumetric analysis. Many titrations involve either acid-base reactions or oxidation-reduction reactions. In this experiment we do one of each. We monitor the pH of the reaction with the use of a color indicator. We also learn about the standardization of bases (NaOH) and acids (HCl) which
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The 4 billion people comprising the base of the pyramid，they earn less than $2‚000 each per year. The base of the pyramid is poorest but largest socio-economic group. In 2012‚ two billion to three billion people live in poverty worldwide. This huge base of the pyramid has an estimated $5 trillion in purchasing power.While the developed markets are well saturanted‚ the base of the pyramid become more attractive for many enterprises.The base of the pyramid may indeed provide strong growth engines‚not
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paper is to explain and evaluate the marketing activities of Discount Tire Company. The name Discount Tire Company and the abbreviation DTC may be used interchangeably within this paper. It is my intent to expound upon the marketing activities that have made this company so successful. I contend that‚ in a down economy‚ these marketing activities have allowed the company to remain ahead of its competition. Discount Tire Company was founded in Ann Arbor‚ Michigan in 1960 by Bruce T. Halle.
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session for nine consecutive months with a three-month break. The explanation is needed‚ as to why public school in session year round is a more efficient way to use time and resources than is a nine/three school year. The most important aspect of grasping the new age thought of year round education is to realize it does not mean more school. The original thought of year round school is to go one hundred eighty days‚ with shorter breaks throughout the year. This is opposed to a single large break at
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