Enthalpy of Displacement IB Topic: Energetics Assessment Criteria: DCP‚ CE DATA COLLECTION AND PROCESSING ASPECT MARKS AWARDED Recording raw data: Processing raw data: Presenting Proceeded data: TOTAL: CONCLUSION AND EVALUATION Conclusion Evaluation Improving the procedure TOTAL AIM: Experimentally determine the enthalpy change of the displacement reaction between zinc and copper sulphate. Zn (s) + CuSO4 (aq) Cu (s) + ZnSO4
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Thermodynamics – Enthalpy of Reaction and Hess’s Law I. Purpose The purpose of this lab is to verify Hess’s Law through the three reactions of NaOH and HCl‚ NH4Cl and NaOH‚ and NH3 and HCl. The sum of the enthalpies of the first two reactions should equal the enthalpy of the third reaction. II. Background Hess’s Law is used to determine the enthalpy of a reaction from adding two or more preceding reactions. To determine the enthalpies of certain chemical reactions‚ the change in must
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________________________________________ Absorption Alcohol is absorbed from all parts of the gastrointestinal tract largely by simple diffusion into the blood. However the small intestine is by far the most efficient region of the gastrointestinal tract for alcohol absorption because of its very large surface area. In a fasting individual‚ it is generally agreed that 10% to 20% of a dose of alcohol is absorbed from the stomach (the volume of alcohol affects the absorption) and 75% to 80% is absorbed
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when an alcohol is oxidized by the reagent. A change in color of the reagent from orange to green represents a positive test. Primary alcohols are oxidized by the reagent to carboxylic aicds; secondary alcohols are oxidized to ketones. Tertiary alcohols are not oxidized at all by the reagent. Hence‚ this reaction can be used to distinguish tertiary alcohols form primary and secondary alcohols. Procedures: 1. Place ethanol‚ isopropyl alcohol and tert-butyl alcohol in three different test tubes
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When the word alcohol is brought up‚ what do you think about? What comes to my mind is parties‚ and what people think they have to drink to have fun. Did you know that over 5‚000 people under the age of 21 die each year from alcohol-related car crashes‚ suicides‚ homicides‚ alcohol poisoning‚ and other injuries such as falls‚ burns‚ and drowning? Alcohol can be a very dangerous substance if not treated correctly and drank responsibly. Alcohol is a form of a drug but unlike the other drug‚ marijuana
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Aim To investigate the effect of molar mass on the molar heat of combustion of adjacent members of a homologous alcohol series. Introduction Chemists refer to the energy stored in a substance as the heat content or enthalpy of the substance. The heat of reaction is determined by the difference in the enthalpy between the reactants and products. The molar heat of combustion of a substance is the quantity of heat liberated when one mole of that substance is burnt completely in air. In the case
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FUELS & COMBUSTION CALCULATIONS Unit 5 Prabir Basu TYPES OF FUELS FOSSIL FUELS Solid fuels (COAL) Liquid fuels (OIL) Gaseous fuels (NATURAL GAS) NUCLEAR FUELS RENEWABLE FUELS (BIOMASS) WASTE FUELS (MUNICIPAL WASTES) SOLID FUELS PROPERTIES HEATING VALUE ULTIMATE ANALYSIS PROXIMATE ANALYSIS ASH DEFORMATION POINTS Initial deformation temp. Softening temp. Hemispherical temp Fluid temp. LIQUID FUELS PROPERTIES HEATING VALUE
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Comparing Poems I am going to be talking about their methods that the poets use to explore the connection between people and the places in which they live in. The poems that I am comparing are Hurricane hits England and Presents from my Aunts in Pakistan. In Hurricane Hits England the techniques used are personification‚ she says “Talk to me oya” here referring to the hurricane as a person‚ she is doing this to try and feel like she is at home‚ trying to connect back to where she came from‚ it
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ALCOHOL Drinking alcohol is like taking a drug. It is a form of drug abuse‚ and drug addiction. This is a worldwide problem that many people are involved in. There are good effects of alcohol if it is in small amounts and in self-control. On the other hand there are bad effects‚ if you take for long time. The effects that a person will get are all based on certain factors like‚ how much and how often alcohol is consumed‚ the age of the person‚ when the person started and how long they have been
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Alcohol Facts and statistics ( www.niaaa.nih.gov-2012 ) Global Burden of alcohol abuse‚ In 2012‚ 3.3 million deaths‚ or 5.9 percent of all global deaths (7.6 percent for men and 4 percent for women)‚ were attributable to alcohol consumption.. Alcohol contributes to over 200 diseases and injury-related health conditions‚ most notably alcohol dependence‚ liver cirrhosis‚ cancers‚ and injuries. In 2012‚ alcohol accounted for 5.1 percent of disability adjusted life years (DALYs) worldwide. Globally‚
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