The effect of concentration on the rate of reaction of Magnesium with Sulphuric Acid.
The affect of concentration on the rate of reaction of Magnesium with Sulphuric Acid. Aim My aim is to determine how the concentration of sulphuric acid affects the rate of reaction between magnesium and sulphuric acid. I am going to do this experiment five times with five different concentrations: 0.2, 0.4, 0.6, 0.8, and 1mol. The concentration of the acid is recorded in moles per decimetre cubed (mol/dm³). I am going to repeat the experiment for each concentration three times to make my results more reliable. Introduction A rate is a measure of the change that happens in a single unit of time. A reaction is when particles called reactants collide and form new substances. Theses substances which are created are called products. The rate of a chemical reaction is how fast the reactants react against each other. Some reactions happen very fast, e.g. an explosion, while other reactions will be much slower, e.g. rusting. The reactant particles are only able to react when they successfully collide with each other. Not all collisions are successful because the particles don't have the correct activation energy. Activation energy is the minimum energy required before a reaction can occur. There are several factors that can increase or decrease the chance of a successful collision. The factors that affect the rate of the reaction are; * Temperature - when we
rate of reaction
Katie Whitmore 10H Year 10 coursework Investigate how concentration affects the rate of reaction What is meant by rate of reaction? Chemical reactions can take place at different speeds. An explosion, such as the reaction of hydrogen and oxygen together to produce water vapour, is a very fast reaction - it is over in a tiny fraction of a second. The rusting of iron and the souring of milk are very slow reactions. A reaction which is over in a fraction of a second is a very fast reaction. We say it has a high rate of reaction. As the time taken for the reaction to be completed increases, the rate of reaction decreases. What factors affect the rate of reaction? The effect of increasing concentration on the rate of reaction is relatively easy to predict qualitatively. It is not possible to be sure of a quantitive relationship without carrying out experimental studies. In some cases doubling the concentration of one of the reactants doubles the rate of reaction. However, it is possible to find reactions where increasing the concentration of one of the reactants has no effect at all on the rate of reaction. Which factor are you investigating? Rate of reaction is how fast or slow the rate of reaction is. The factors that affect the rate of reaction are tempreture, concentration, pressure and light. I am investigating concentration, the reaction between
What affects the rate of a reaction? The reaction I will be investigating is the reaction of marble chip (Calcium carbonate) with hydrochloric acid.
Aim: I am going to find out what factors affect the rates of reaction. The reaction I will be investigating is the reaction of marble chip (Calcium carbonate) with hydrochloric acid. Balanced Chemical Equation! Calcium carbonate + hydrochloric acid Calcium Chloride + Carbon Dioxide + Water CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) Variables: The speed of a reaction depends on how often and how hard the reacting particles collide with each other, the theory is that particles have to collide in order to react; also they have to collide with enough energy to make the reaction happen, this is called the activation energy. The individual factors that affect the rate of reaction are; Temperature, Catalyst, Surface area, and Concentration. Temperature work by, at the temperature is increased the particles all move quicker, this means there will be more collisions, because of the increase in speed the collisions are going to be of greater force making it more likely that there will be a reaction and a form of new products; well this is the theory. A catalyst works by giving the reacting particles a surface to stick to where they can bump into each other; this in theory should increase the number of collisions. Surface area is an important factor in rate of reactions because if one reactants is a large solid then breaking it up into
displacement reactions of metal
Lab Report on Displacement Reactions of Metals * Hypothesis I can predict that a more reactive metal will displace a less reactive metal from its salts. To predict the displacement, I have applied the knowledge of reactivity and this is my prediction: Copper Magnesium Iron Zinc Magnesium Iron Zinc Copper Magnesium will displace zinc, iron and copper as it is a very reactive metal. Zinc will displace iron and copper but not magnesium as magnesium is more reactive. Iron will displace copper only as it is a less reactive metal. And copper will not be able to displace any metals because it is a very weak metal. * Method 1. I had placed the three pieces of the four different metals on a tile containing twelve holes. 2. Then I added the aqueous solution that is magnesium solution, iron solution, zinc solution & copper solution onto the different metals. 3. Then the reaction took place and I noted the results and the observations. * Results & Observations Metals + Aqueous solutions Results . Copper + Magnesium sulphate No reactions 2. Copper + Iron sulphate No reactions 3. Copper + Zinc sulphate No reactions . Magnesium + Iron sulphate Bubbles were formed, it had
Rate of Reaction Lab
Rates Of Reactions: Lab Report Introduction: In chemistry recently we have been doing the topic of Reactions. In this topic we have been learning about why elements react, how they react and what affects the reaction. For instance, temperature affects the speed of a reaction, and sometimes if there is any reaction at all. Aim: The aim of my experiment is to see how the factor of surface area affects the speed (rate) of a reaction between Hydrochloric Acid and Calcium Carbonate. Hypothesis: I know that the greater the surface area, the faster the reaction. Hence I predict that when I react Hydrochloric Acid with Calcium Carbonate, the Calcium Carbonate marbles will react slower than the Calcium Carbonate powder, as I think the powder has a higher surface area. The variables are as follows: Independent Variable: I shall be changing the surface area of the Calcium Carbonate to prove or disprove that it actually makes a difference to the rate of reaction. Dependant Variable: The Carbon Dioxide given off will be my dependant variable in this experiment. Control: I shall try to control the amount of Calcium Carbonate and acid in each experiment, so it is as close to being the same as possible. Apparatus: -Beaker -Measuring Cylinder -Calcium Carbonate -Scales -Hydrochloric Acid (0.4M) -Pipette Diagram: Method: The apparatus was gathered and set up.
Rates of Reaction
Rates of Reaction Coursework Investigation: to find out how the rate of reaction is affected by changing concentration Aim: To find out how changing the concentration of sodium thiosulphate solution affects the rate of reaction when it is mixed with hydrochloric acid. I am going to do this experiment by adding different concentrations of sodium thiosulphate into a constant concentration of hydrochloric acid (2M). To make the different concentrations of sodium thiosulphate I will mix 4% sodium thiosulphate with distilled water, this will ensure that I do not get any other substances into my mixture when I am changing the concentration Word Equation: Hydrochloric acid + Sodium Thiosulphate sodium chloride + sulphur dioxide + sulphur + water. Symbol Equation: 2HCl(aq) + Na2S2O3(aq) 2NaCl(aq) + SO2(g) + S(s) + H2O(l) Chemicals and apparatus: A 100ml conical flask A 50ml measuring flask A paper cross A stirring rod A thermometer A stopwatch 2M hydrochloric acid Distilled water 4% sodium thiosulphate solution Variables: Independent -The independent variable in this experiment is the concentration of sodium thiosulphate solution because I will be changing it throughout the experiment Dependent -The dependent variable in this experiment is the time it takes for the hydrochloric acid to react with the sodium
Rates of Reaction
Rates of Reactions Aim: The aim of this experiment is to investigate the rates of reaction of calcium carbonate (CaCO3) powder and hydrochloric acid (HCl) and test how the concentration of HCl can modify the rates of reaction. Hypothesis: For this experiment, I recorded the amount of time it took for the reaction of 2g of CaCO3 powder and HCl with the concentration of 0.5M, 1M, 2M, 3M, and 6M respectively to produce 10ml of carbon dioxide (CO2). I predict that the higher the concentration of HCl that is added to the CaCO3 powder, the faster the reaction will produce 10ml of CO2. Moreover, I also believe that if the concentration of HCl doubles, the time taken to produce 10ml of CO2 will be halved accordingly. This empirical guess was based on my knowledge on the collision theory, according to the theory: the more collisions between particles in a given time, the faster the reaction. Moreover, the concentration of the acid is proportional to the amount of acid particles in the same volume. In other words, by doubling the concentration of HCl, there will be twice as many acid particles in the same volume of water accordingly. From this information, I have predicted that if the concentration of HCl doubles, the speed in which 10ml of carbon dioxide is produced will be halved because the chance of collision will double, speeding up the rates of reaction. Apparatus/
Rate of Reaction - Sodium Thiosulphate and Hydrochloric Acid
Sodium Thiosulphate Coursework Introduction I have been asked to investigate the effects different factors such as concentration and temperature have on the rate of reaction The rate of reaction is the loss rate of a reactant or the rate of creation of a product during a chemical reaction and it can be measured by dividing one by the time taken for the reaction be completed. Collision Theory states that an increase in concentration, temperature, surface area and the use of a catalyst in a reaction will either increase the rate of reaction by increasing the rate of collision between reactant particles, increase the success rate of collisions between the reactants or both of these reactions, there is also another factor which effects the rate of reaction, but is only applicable in gasses, that factor being pressure. I have chosen to investigate the effects of Concentration on rate of reaction, as it is the most accurately achievable while still challenging factor to change. Method: Equipment- x conical flask 2x 50ml measuring cylinder x 10ml measuring cylinder x pipette Sodium Thiosulphate Hydrochloric acid Water Stop clock Safety goggles Plain paper with a black cross on it. Add 10ml of HCL to a conical flask, by All procedures will be undertaken with safety goggles on. After assembling all of the equipment I will pour as close to 10 ml of hydrochloric acid
Who's cheating on the vinegar?
Chemistry Course Work - Neutralisation of ethonoic acid Who's cheating on the vinegar? Task: A chip shop owner buys his vinegar from 4 different suppliers A, B, C and Safe way. He suspects that at least one of them waters down the vinegar supplied to them by the manufacturer. You are the analytical chemist assigned to investigate this. You have already planned an experiment that will give you the evidence you need. The following results have been taken from a similar experiment. Your task is to analyse these results and present your conclusion. You must then evaluate the experiment by assessing its success in answering the original question, explaining any anomalous results, and suggesting any possible improvements. Aim: I have been asked to find out if any of the suppliers have been watering down the vinegar they have supplied to the chip shop owner. I will do this by using a technique called Titration. Vinegar is ethonoic acid What is Titration? Titration is a form of neutralisation. This is a process of determining the concentration of a substance in solution. A measured amount of a known solution concentration (molarity) is added to an unknown volume of a second solution in carefully measured amounts until a reaction of definite and known proportion is completed. Neutralisation is when a Hydrogen ion and a Hydroxide ion react together to form water which is
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