The Effects of Increasing the Concentration of Sodium Thiosulphate When Reacting with Hydrochloric Acid I wan to find out the effects of increasing the concentration of sodium thiosulphate when reacting with hydrochloric acid in a investigation. In this investigation I will be using mixtures of different volumes of sodium thiosulphate and hydrochloric acid. I will see the effects of concentration of sodium thiosulphate when reacting with hydrochloric acid and see the results if the reaction was fast or slow in a high concentration and a low concentration. I will do 8 experiments repeated 3 times each to get better results and be more accurate to the real answer. In the experiments I will lower the concentration and add 10cm3 added of H2O every time I lower the concentration of sodium thiosulphate by 10cm3. I will observe the 8 experiments repeated 3 times each. Each experiment I will have different amounts of concentration of sodium thiosulphate starting with 90cm3 and I will keep a constant amount of HCL of 10cm3 and I will also add different amounts of H2O starting with 10cm3 and increasing as the concentration of sodium thiosulphate decreases. How am I going to make it a fair test I will use a clean flask for every experiment so the mixtures from the last experiment are not present. I will use measuring cylinder to be more accurate of my numbers also so I know I am adding the right amount for the experiment. Pg 2 I will make it a fair test by repeating the experiment 3 times. Because if I make a mistake in the first one then I can correct on my 2nd and 3rd experiment and also get better results. Aim --- My aim is to observe and find the effects of increasing the concentration of sodium thiosulphate when reacting with hydrochloric acid. I want to find out the effects of sodium with increasing and
have either not stir the mixture or use a machine to stir it at the
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables.
I have chosen to only change the alcohol. I am changing the alcohols because my aim is to find out how different alcohols combust, so by changing them in the experiment I will fulfil my aim. There is no need to change the other variables as they have no significance. To make sure the test is fair, I will make sure that I have made checks on the apparatus before use. The checks will be.
Paper Towels Variables: To enable fair test certain aspects of the experiment will have to be
repeat the process 3 times in total to ensure a fair test. At the end
Investigating the effect of Temperature on the reaction between Sodium Thiosuphate and hydrochloric acid · Planning I am investigating the different temperatures on the reaction between Sodium Thiosuphate and Hydrochloric acid. The factors I could investigate would be temperature, concentration and substances. I have chosen to investigate Temperature. I predict that the higher the temperature the more rapidly the cross would obscure.
The Arrhenius equation ln k = ln A – (Ea / RT) can be shown
The Effects of Concentration on Reaction Rate with Sodium Thiosulphate ---------------------------------------------------------------------- Planning = == == =
5. Add Hcl, as soon as it mixes with the ( ), start the stopwatch
a bigger one so I can fit the cross under it and also be able to pour
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.
My aim in this piece of work is to see the effect of temperature on the rate of a reaction in a solution of hydrochloric acid containing sodium thiosulphate.
1. The labels have fallen off of three bottles thought to contain hydrochloric acid, or sodium chloride solution, or sodium hydroxide solution. Describe a simple experiment which would allow you to determine which bottle contains which solution.
Ties and hair should be tucked out of the way, so they do not make contact with any of the chemicals. It would also be preferable to wear a scientific apron, however this is not essential. We should also try our best not to spill any chemicals, and we must not eat or drink in the lab while dealing with these harmful chemicals, as they can get on our hands. Fair Test To make this experiment a fair test, we need to make sure we do a number of things. In this experiment we are trying to find the rate of reaction using concentration as a factor, so there are a number of things we need to make sure we do to keep it a fair test.