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
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on the rate of reaction. By using self investigative and experimental skills‚ the experiment was done in order to determine how the rate of reaction will be altered‚ whether it will increase‚ decrease or remain constant when the different concentration of enzymes added. INTRODUCTION: Enzymes are produced naturally in plant‚ animal‚ and microbial cell. There are thousands of different enzyme can be found in any cell. Enzymes can be describe as molecules that are greatly increase the rate of chemical
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Using these four passages and your own knowledge‚ assess the view that international diplomacy failed to achieve stability in Europe from 1919 to 1930. Initially‚ interpretation A presents the view that mutual pacts between Germany‚ Belgium and France helped peace in the region. These agreements would have allowed the possibility of future dealings as well as reducing post-war tensions; however‚ as interpretation D agrees‚ I believe this détente was an “illusion”. I believe the idea the agreements
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------------------------------------------------- Maggi ketam Origins The original company came into existence in 1872 in Switzerland‚ when Julius Maggi took over his father’s mill. He quickly became a pioneer of industrial food production‚ aiming to improve the nutritional intake of worker families. Maggi was the first to bring protein-rich legume meal to the market‚ and followed up with a ready-made soup based on legume meal in 1886. In 1897‚ Julius Maggi founded the company Maggi GmbH in the
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Explore the ways that Tennyson and Hughes present the emotions of the soldiers in the poems ‘The Charge of the Light Brigade’ and ‘Bayonet Charge’. In this essay‚ I’m going to talk about how Tennyson present emotion and feeling in his poem towards the patriotic soldiers that suffered in war due to the blunder the generals had made. Also on the ‘Bayonet Charge’ Hughes writes his poem to show how brave and patriotic the soldiers were to go into the war for their beloved country. Tennyson suggest
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P3 – Produce a chart showing how two businesses are organised (Thorpe Park and your charity). Marketing Executives PR Manager Marketing Analysts Brand Manager Marketing Manager Human Resources General Manager Thorpe Park Staffs and employees Director/ Manager Finance and information system and divisions International Chief Executives Trading The campaign policy Staffs and voluntaries Oxfam Corporate human resources The fund raiser and supporter
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purpose of laboratory assignment 3 was to measure the rate at which a chemical reaction takes place. For the purpose of this lab we measured the rate a balanced oxidation/reduction reaction between iodine‚ hydrogen‚ and bromate ion occurs. The above reaction occurs slowly so we used a coupled iodine clock reaction to measure the rate of the oxidation/reduction reaction because it occurs much faster but is still dependent upon the other reaction. To accomplish this‚ two mixtures were prepared in separate
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Aim: To determine the rate law of chemical reactions Introduction: The aqueous solution of potassium peroxydisulphate can oxidize potassium iodide as follow: Equation: K S 0 (aq) + 2KI (aq)->2K S0 (aq)+I (aq) 2 2 8 2 4 2 KI(aq) +I (aq) -> KI (aq) 2 3 _________________________________________________ K S 0 (aq) +3KI(aq) -> 2K S0 (aq)+ KI (aq) 2 2 8 2 4 2 The rate law of this reaction can be represented as follow: Rate=k[S208 2-]^a [I-]^b When the concentration of peroxydisulphate ions
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Chemical reactions proceeding until all the reactants are used is a common misconception. Chemical reactions actually behave differently. The general reaction equation is a A + b B → c C +d D in this equation A and B are the reactants forming the products C and D. However‚ unlike the common thought that the reaction ends when it runs out of A and B it actually does not. In most reactions C and D start to react to form A and B at a certain point as you can see in the equation c C + d D → a A + b
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will increase the speed of reaction as the greater the surface of the solid reactants‚ the more particles are required to expose and ‘cover’ the capacity of the solid. Increased surface area results in an increased chance of collisions between reactant particles. Since the collisions become more frequent and abundant‚ the rate of reaction increases. Aim The aim of the experiment is to see if a greater surface area of a dissolvable tablet creates a faster or slower reaction Independent Variable
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