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Rates of Reaction - Concentration.
The first 200 words of this essay...
Rates of Reaction - Concentration
The rate of reaction is the rate of a loss of a reactant or the formation of a product during reaction. Although there are many different variables to test, I have chosen to experiment with different concentrations of hydrochloric acid, with sodium thiosulphate as the constant.
This experiment tests how differing concentrations affect the rate of a chemical reaction. It will be done using a simple experiment where one substance is constant and the other is varying.
For each experiment I will need the following;
150 cm3 2 Molar hydrochloric acid
140 cm3 water
250 cm3 sodium thiosulphate
1 conical flask
1 measuring cylinder
1 stop clock
5 pieces of paper
Prior to this investigation, I conducted a preliminary experiment to determine the strength of my method in terms of accuracy and precision. I decided to test how the temperature of an experiment affects the rate of reaction. Therefore, I got 50 cm3 sodium thiosulphate and 40cm3 hydrochloric acid diluted with 10cm3 water. After pouring the two mixtures into a conical flask
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