Investigating the Factors Influencing the Rate of Reaction Between Sodium Thiosulphate and Dilute Hydrochloric Acid Introduction In a reaction, the initial materials are called the products, and the result materials are known as products. The time it takes for a reaction to happen in is known as the speed or rate of the reaction. The coursework entails investigating the rate of reaction between Sodium Thiosulphate and Dilute Hydrochloric acid and the effect of different variables on the reaction. When a reaction between Sodium Thiosulphate and an acid, a cloudy, yellow precipitate is formed. To see the time it takes a reaction to occur there will be a measure of the time it takes for the precipitate to occur. Looking through the conical flask with the Sodium Thiosulphate and Hydrochloric acid solution, observing the 'X', until it disappears, will do this. This is when the precipitate has formed. The actual reaction in this experiment is: Sodium thiosulphate + hydrochloric acid ==> sodium chloride + sulphur dioxide + water + sulphur Na2S2O3(aq) + 2HCl(aq) ==> 2NaCl(aq) + SO2(aq) + H2O(l) + S(s) There are a number of factors that alter the speed of chemical reactions; these include temperature, concentration of reactions in solution, pressure in gases, surface area, presence of light, and the addition of catalysts. In the experiment that I will conduct, I will vary the concentrations of the solution, whilst ensuring the rest of the variables are kept constant. The dependant variable will be the rate of the reaction or the time taken for a reaction to be present, all other variables are fixed. Diluting the solutions with water will vary the concentrations of Sodium Thiosulphate. The 8 different concentrations will be: 1.0M 0.875M 0.75M 0.625M 0.5M 0.375M 0.25M 0.125M Prediction I predict that the higher the concentration of Sodium Thiosulphate, then the higher the rate of reaction. I predict that the rate of reaction is directly proportional to the concentration of Sodium Thiosulphate. I predict that 1.0M of Sodium Thiosulphate will have the
Investigating How Concentration of Acid Affects the Reaction Between Calcium Carbonate and Hydrochloric Acid Introduction = == == == ==
Investigating How the Concentration of Hydrochloric Acid Affects the Rate of Reaction with Calcium Carbonate
Rate of reaction is the speed of reaction. In essays written by young scientists, they have used concentration as variable in their experiments; some have used a light sensor. connected to a data logger, to measure the amount of light passing. through the "cloudy" liquid. 1 moles = 6.02 1023 The particles in the hydrochloric acid and sodium thiosulphate need to
I am going to investigate the rate of reaction between calcium carbonate and. and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant. in order to carry out a deta. Investigating Rate of Reaction Aim I am going to investigate the rate of reaction between calcium and calcium.
The Effect of Temperature of Hydrochloric Acid on the Rate of Reaction Between Hydrochloric Acid and Magnesium
Effect of Temperature on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Investigation Chemical reactions are used in our everyday life, they literally keep us alive. They are used in food, respiration and everywhere else in the environment. A chemical reaction mainly occurs when reactants react together to produce a new product. The speed at which this reaction takes place is called the rate of reaction. The product produced has a number of particles in the solution that has formed from the reactants.
My predictions, using previous knowledge is that the higher the concentration of Sodium Thiosulphate there is the faster the reaction rate will be. This is based on the collision theory which I have outlined in Background Knowledge. In my preliminary work this has always been the case, for example if I used 40 ml of Sodium Thiosulphate and 10 ml of water it was much faster than when I used 10 ml of Sodium Thiosulphate and 40 ml of water. Background Knowledge The rate of a reaction depends on two factors. 1)
The Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Planning. CaCO3 (s) + 2HCl (aq) ---- CaCl2 (aq) + H2O (l) + CO2 The rate of reaction depends on how hard and how often the reacting particles collide with each other. A rate of reaction is how fast a reaction takes place.
a bigger one so I can fit the cross under it and also be able to pour
from 10cm to 50cm to make it easier to see the difference in a graph.
The Effect of Concentration of Hydrochloric Acid on the Rate of Reaction with Magnesium Aim: To investigate the effect of concentration of hydrochloric acid on the rate of reaction with magnesium Prediction: As the concentration of the hydrochloric acid increases, so will the rate of reaction Hypothesis: In a reaction, particles of two different reactants react together to form a product. The reaction only takes place on account of two things, if the particles collide, and if the collision has enough 'activation energy'. The two reactant particles, in this case magnesium particles and hydrochloric acid particles, must collide with each other on the correct 'collision course'. If this does not occur then no chemical reaction will take place. The reaction must also have enough energy, this can be affected by temperature, the more heat the particles have the faster they move and so the more energy therefore more chance of successful collisions.
Investigating the Effects of Temperature on the Rate of Reaction between Magnesium and Hydrochloric Acid Introduction Chemical kinetics is the study and examination of chemical reactions regarding re-arrangement of atoms, reaction rates, effect of various variables, and more. Chemical reaction rates, are the rates of change in amounts or concentrations of either products or reactants. Concentration of solutions, surface area, catalysts, temperature and the nature of reactants are all factors that can influence the rate of reaction. Increasing the concentration of a solution allows the rate of reaction to increase because highly concentrated solutions have more molecules and as a result the molecules collide faster. Surface area also affects reaction rate because when the surface area of a reactant is increased, more particles are exposed to the other reactant.
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
Investigate how the concentration of hydrochloric acid effects the rate at which it reacts with calcium carbonate
Rate of Reaction - Sodium Thiosulphate and Hydrochloric Acid. Aim Investigation, to find out how the rate of reaction between sodium thiosulphate and hydrochloric acid is affected by changing the concentration. Introduction I must produce a piece of coursework investigating the rate of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant, or the rate of development of a product during a chemical reaction. It is measured by dividing 1 by the time taken for the reaction to take place.