The Rate of a Reaction The area of chemistry that deals with the rate or speed of chemical reactions is known a chemical kinetics. The word “kinetic” is derived from the Greek name kinitikos that means movement or motion. In the present context‚ the kinetic means the reaction rate or rate of a reaction that is defined as the change in concentration of a reactant or a product with time (M/s). Chemical reaction can be represented by the following general equation. Reactants Products It is very important
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Factors Affecting Rates of Reaction Thanks to Michelle Craig Manitoba Curriculum Chemistry Grade 12; Kinetics‚ Topic 3-08 Objectives To design short experiments to investigate and explain qualitatively using collision theory the relationship between reaction rate and temperature‚ concentration‚ catalyst‚ and surface area. Apparatus and Materials Available 3 x 250 mL beakers magnesium ribbon (1 cm) 3 x test tubes magnesium powder test tube rack mossy zinc 10 mL graduated
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reaction rates and concentration (research paper) By katie prestage what are reaction rates? The rate of reaction is the speed in which a reaction takes place. This can be measured by the rate in which a reactant is used up‚ or the rate a product is created. If a reaction has a low rate‚ it means that the particles are combining at a slow speed. If the rate is high‚ it means that the particles are coming together at a fast speed. For example‚ the rusting of iron through oxidation has a slow
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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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Chemistry Coursework Rates of Reaction Investigation Introduction In this investigation I am going to be investigating the reaction between marble chips and hydrochloric acid‚ and to see what differences in the rate of this reaction arise when different concentrations of acid are used. Below is the word equation for this reaction: Calcium Carbonate + Hydrochloric Acid = Calcium Chloride + Carbon Dioxide + Water Below is the fully balanced chemical equation for this reaction. CaCo3
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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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An investigation to show how the rate of reaction between hydrochloric acid and sodium thiosulphate is affected by the concentration of the acid Simple Procedure Place a conical flask on a piece of paper with a cross on it. Add hydrochloric acid and sodium thiosulphate‚ and record the amount of time taken for the cross to disappear through the solution from the top of the flask. Record this time and repeat this for different concentrations of hydrochloric acid. Fair Test The variables in
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specialised cells and released from them. The digestive enzymes are like this. They pass out into the gut‚ where they catalyse the breakdown of food molecules. Different enzymes catalyse different reactions. The table below shows three enzymes and which reaction they catalyse. Enzyme Reaction catalysed Amylase Starch → sugars Protease Proteins → amino acids Lipase Lipids → fatty acids + glycerol Different parts of the gut produce different enzymes. The table below shows where three
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Task 4 (1.4) What is the most important way in which the business you have chosen could improve the promotion element of its marketing mix? The business I have chosen is a local Chinese restaurant in Feltham TW13 4BS called The golden empire .It sells all the types of Chinese food also they have cocktails‚ wines‚ cutlets and other sorts of foods. The figures above show that there are 19‚963 people aged 25-29 who are mostly young busy families. There is a population of 89‚052 of people aged
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Cover page Candidate number: Quinton Ritchie Candidate Number: School Name: Aquinas College School number: 1901 Religion coursework: Aquinas College Table of content Cover page………………………………………………………………………… ……… Table of contents…………………………………………………………………………… Question 1 (Who is an immigrant?)…………………………………………….................. Page 1 Question 2 (Why do immigrants leave their countries?)……………………….................. Page 2 Question 3 (How has the Haitian population grown in the Bahamas?)………..
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