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Effect of concentration on rate of reaction
Effect of changing concentration of hydrochloric acid on the rate of reaction with sodium thiosulphate
Effect of changing concentration of hydrochloric acid on the rate of reaction with sodium thiosulphate
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How Concentration affects the rate of reaction
I am investigating the rates of reaction and how the different
variables can affect it. I know that the temperature, a catalyst,
concentration, the surface area, light and pressure of a gas can
affect the rate of reaction. In this particular experiment I am going
to investigate on how the concentration of one of the reactants
affects the rate of reaction.
To show that the concentration does affect the rate of reaction I am
going to carry out the reaction of sodium thiosulphate and
hydrochloric acid. The reactant I am going to change in concentration
for each experiment/reading is sodium thiosulphate.
Word Equation
Sodium + Hydrochloric Sodium + Sulphur + water + Sulphur
Thiosulphate acid Chloride dioxide
Chemical Equation
=================
Na2S2O3(aq) + 2HCl(aq) -> 2NaCl(aq) + S(s) + H2O(l) + SO2(g)
Equipment
=========
Sodium Thiosulphate (NaSO) of different concentrations and volumes
5cm Hydrochloric acid (HCl)
Water of different volumes
Paper marked with a cross
2 Measuring cylinders
Conical Flask
Stopclock
I will set the equipment up as shown in the diagram below
Method
I am going to measure out the right amount (50cm³) and concentrations
of the sodium thiosulphate and hydrochloric acid. I will vary the
concentration of the sodium thiosulphate but will still keep the
volume of the acid the same. I will keep the volume (5cm³) and
concentration (2.0 moi/dm³) of the hydrochloric acid the same.
The table below shows the amount of water I will add to the sodium
thiosulphate to vary the concentration in each experiment.
---------------------------------------------------------------------------------
Experiment Volume of 0.15 mol/dm (cm) Volume of water Concentration sodium
Number sodium thiosulphate (cm (Cm) thiosulphate solution
(mol/dm)
1 50 0 0.15
2 40 10 0.
How does concentration affect the rate of reaction between magnesium and sodium? and hydrochloric acid. Secondary resources:.. Chemical reactions only occur when reacting particles collide with each other, with sufficient energy to react, this is called the collision theory. The minimum amount of energy required to cause this.
Rates of Reaction Reactions Reactions can only occur when two different particles come together. The theory for the way the reaction occurs is called The Collision Theory. The collision theory states that that the different particles need to collide with each other in order to react. However, they do not react if they collide without sufficient energy, and therefore the more energy a particle has, the more likely it is to react.
more it is in contact with the acid so it will react at a different
The experiment’s purpose was to determine whether the rate of reaction was impacted by reactant concentration or temperature. Based on scientific research, it was said that if the reactant concentration was increased, then the rate of reaction would also increase. Also, if the reactant temperature was increased, it was believed the rate of reaction would increase as well due to the increased kinetic energy and speed of the molecules. Based on the results, my first hypothesis was not true. The reaction with the lowest concentration of pea extract had the fastest rate of reaction, while the highest concentrated pea extract finished second. The second hypothesis was found to be both true and false because the warmest temperature reaction
Concentration's Effect on the Speed of Reaction Between Magnesium and Hydrochloric Acid Planning 1: The aim of this investigation is to find out the effect of acid concentration in the reaction between dilute hydrochloric acid and magnesium ribbon. The rate of a chemical reaction is a measure of how fast the reaction takes place. A high concentration of hydrochloric acid could mean a fast reaction whereas as a low concentration could mean a slow long reaction. I will be testing different concentrations of acid reacting with magnesium in two separate experiments, which will hopefully prove this initial prediction. [IMAGE][IMAGE] During my science lesson I have learnt the following information that has enabled me to plan my investigation.
And the symbol equation for it is:. Na2S2O3 + 2HCl, S + SO2 + 2Na + H2O. Before conducting my experiment, I will research into, amongst other things, the factors that affect the rate of a reaction. This is so that I may have enough information to understand the effect of temperature on the rate of a reaction and also gain appropriate understanding to make a suitable prediction as to what the outcome of my experiment will be. Reactions occur when the particles of reactants collide together continuously.
with that is I would have to dilute the acid again as the times were
Firstly, we need to keep the chemical at a constant concentration. So, in this experiment we have chosen to keep hydrochloric acid at a constant concentration (5cm3). We could have, however, used Sodium Thiosulphate as a constant, but we had chosen to use Hydrochloric acid. Next, we must make sure that the solution is kept at a constant volume throughout the experiment. If the volume is different, then it could give different results if it was at a constant volume.