Science Coursework-Rates of Reactions Introduction Investigating how the concentration of sodium-thiosulphate (STS) and hydrochloric acid (HCL) affects the rate of reaction in the experiment. In addition I am also checking how different variables affect my experiment and also how I can make my test more precise‚ reliable and accurate. Strategy According to my results‚ as the concentration of STS solution increased the rate of reaction of my experiment was increased. Also as the concentration
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Chemestry Lab Rates of Reaction (Picture from: http://sciencespot.net/Pages/kdzchem.html) The rate of reaction is how fast or slow a reaction is completed. This is important for factories and chemists all over the world. What happenes during a reaction is atoms or molecules that collide and form new molecules. You can affect this rate of reaction with: temperature of reactants or suroundings‚ surface area of reactants‚ if there is a catalyst present‚ but in theis lab the concentration was changed
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Abstract We performed two trials of nine different variables of reactions to determine what increases/decreases reaction rates. The variables we used are hot/cold and room temperature water‚ a equal mixture of HCL and water‚ A equal mixture of NaOH and water‚ either a whole‚ broken‚ or finely crushed Alka-seltzer tablet. The fastest rate average was at 0.04 s (finely crushed Alka-seltzer with room temp. water). The slowest rate average is 8.02 s (Alka-seltzer with cold water). Introduction
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Investigate the effect of concentration on the rate of a reaction Research question: To what extent does the concentration of hydrochloric acid affect the rate of the following reaction: 2 HCl(aq) + CaCO3(s) → CaCl2(aq) + H2O(l) + CO2(g) Data Collection and Processing: Table1: Different volumes of Co2 gas produced by Different concentrations of HCL acid. Volume of CO2gas formed from 5 different concentrations of HCL acid ±0.5ml 5 different concentrations of HCL acid (Mol) ±0.5ml Time (sec) ±0.1 0.25mol
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Effect of Concentration on Reaction Rate Aim: To use a simple reaction between sodium thiosulphate and hydrochloric acid to discover concentration this determines how fast chemical reactions occur. Independent Variable: Concentration of hydrochloric acid (%) Dependent Variable: Time taken for chemical reaction to take place (sec) Hypothesis: My prediction is that the increased concentration of the thiosulfate will in turn lead to an increase in the rate of reaction. This is a well informed
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The effect of temperature on a reaction rate In this experiment I shall be investigating how temperature affects the rate of reaction Rates of reaction The Factors that affect the rate of reaction are temperature‚ surface area‚ concentration‚ catalysts‚ light and pressure Surface area – Surface area is the amount of solid surface that is available for reaction - Only affects solids so this will not affect our
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HCL TECHNOLOGIES In 2011‚ HCLT ERS (Engineering and R&D Services)‚ a division of HCL Technologies‚ a global IT services corporation headquartered in New Delhi‚ India‚ had to devise next year ’s plan for the Engineering Out Of The Box (EOOTB) business concept that it had initiated in 2009‚ which transformed the division ’s ability to create "16 productized solutions" and to engage new and old customers in new revenue services. The productized solutions were heavily reliant upon IT platform-based
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Aim: The rate at which a reaction occurs‚ or takes place‚ is affected by various factors‚ such as the temperature at which the experiment is conducted in‚ the pressure which is given‚ the surface area which is exposed‚ use of catalysts‚ and the concentration. In this investigation‚ I would be investigating the affect of surface area‚ or particle size‚ in the rate at which a reaction occurs. Background Information: The more finely divided the solid is‚ the faster the reaction happens. A powdered
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A STUDY ON CORPORATE SOCIAL RESPONSIBILITY (CSR) IN HCL TECHNOLOGIES‚CHENNAI Review report - 1 ( Submitted by Muralidharan.P‚ Roll No: 1110MBA0920‚ Reg No:68512150002 ) 1 NEED FOR THE STUDY CSR has become an integral part of corporate strategy. Companies have CSR teams that devise specific policies‚ strategies and goals for their CSR programs and set aside budgets to support them. Corporate social responsibility plays a crucial role in making your brand popular not only
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Competitor Case Study - HCL Technologies Submitted by: Farah Aijaz PGP20121663 SUMMARY HCL has grown faster than Indian IT Industry during the last decade.While HCL growth was lagging behind Indian IT Industry growth during the first half of the decade‚ HCL came back strongly during the second half of the decade. During the first half of the decade‚ HCL revenues grew at a 5-year CAGR of 30% from $207mn in FY2000 to $764mn in FY2005. While HCL Technologies (HCL) was rising at 30% compound
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