Chemistry Book Notes: Chapter 21: Buffers and the Titration of Acids and Bases 21-1 Henderson-Hasselbalch Equation THE HH EQUATION OFTEN CAN BE USED TO CALCULATE THE pH OF A BUFFER SOLUTION -buffer >a solution containing both a weak acid and its conjugate base can resist a change in pH by neutralizing either an added acid or an added base. Ex. acetic acid-acetate soln (acid with conj. Base) > Kc for a buffer reaction can = 1/Ka or 1/Kb if you add an acid or base because
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Famous Scientists’ List Name | Birth/Death | Achievements | Albert Einstein | 1879 - 1955 | He is arguably at the pinnacle‚ if the popularity of all the scientists is taken into account. He demonstrated solutions to a trio of mind-boggling topics in Physics in 1905 and shot into the limelight. | Sir Isaac Newton | 1642 - 1727 | "Philosophiae naturalis principia mathematica" called "Principia" is acknowledged as the greatest scientific book ever published. Sir Isaac Newton wrote this in 1687
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the date the report was submitted. Title The title says what you did. It should be brief (aim for ten words or less) and describe the main point of the experiment or investigation. An example of a title would be: "Effects of Ultraviolet Light on Borax Crystal Growth Rate". The title may not contain the word “Demonstrating”. I want you to be more creative and come up with your own title. Introduction / Purpose Usually the Introduction is one or two paragraph that explains the objectives or purpose
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Heat of Mixing: Ethanol and Water Abstract The temperature change when known amounts of water and ethanol were mixed was determined to see the enthalpy change in an isothermal and isobaric environment. Agreeable data was found compared to similar experiments. As the mole fraction increased of the solution so did the enthalpy until a certain limit of about 0.32. Since water’s structure and unique properties affect many aspects of a solution‚ the solutions enthalpy’s decreased at a certain time
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Research Essay- Jacobus Henricus Van’t Hoff Jacobus Henricus Van’t Hoff was born in Rotterdam‚ the Netherlands‚ on August 30‚ 1852. He was the third child in a family of seven children. His father was Jacobus Henricus Van’t Hoff Sr.‚ a physician‚ and his mother was Alida Kolff Van’t Hoff. From a young age he was interested in science‚ nature and philosophy and though of Lord Byron as his idol. Van’t Hoff went against the wishes of his father when he enrolled at Delft University of Technology
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THERMODYNAMICS ENR TECH 3TD3 COMPRESSOR TYPES AND APPLICATIONS PROJECT INSTRUCTOR: DR. REYAD AL-TAIE DATE: JUNE 26‚ 2013 Contents ------------------------------------------------------------------------ I. Introduction………………………………………......3 II. Thermodynamics Properties………...….……………5 III. Thermodynamic Laws……………………………….6 IV. Compression Cycles…………………………………7
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in equilibrium with water‚ at all pressure between atmospheric and 10 bar (150 lb/in2). • To compare between calculated values from experiment data to the data obtained from steam table for vfg and hfg . 2.0. THEORY Thermodynamics is defined as a study related to the transfer of heat and work between a system and the surrounding‚ undergoing a process causing any of the properties of the system change. An ideal gas obeys the equation of state that relates the pressure
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In the 18th and 19th centuries scientists wrestled with identifying and describing the nature of the “stuff” that produced change. One concept that became popular for a while was that of “caloric” (what we now call heat). “Caloric was originally conceived of as a quantity that would flow from a hotter object to a cooler one that would warm up as a result. It answered the need for a way for the cause of warming to get from here to there. Not only did caloric serve as a cause for warming‚ it
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References: 1. Yunus A. Cengel and Michael A. Boles‚ “Heat exchangers‚” in Thermodynamics An Engineering Approach‚ 5th ed. Boston: McGraw-Hill College‚ 2006. 2. J. P. Holman‚ “The Log Mean Temperature Difference‚” in Heat Transfer‚ 10th ed. Boston: McGraw-Hill Higher Education. 3. Incropera‚ DeWitt‚ Bergman and Lavine‚ “The Counterflow
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HES 2330 Thermodynamics 1 Semester 1 – 2013 ASSIGNMENT 2 Due Date: 29 May 2013‚ 5.00 PM Dropbox: Mailbox 83 (HES2330/HES4330) – Level 8‚ ATC Building 1. A container filled with 45 kg of liquid water at 95oC is placed in a 90-m3 room that is initially at 12oC. The thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room. Using constant specific heats‚ determine (a) the final equilibrium temperature‚ (b) the amount of heat transfer between
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