chemistry
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An investigation to find the effect of changing the concentration on the rate of a reaction between sodium thiosulphate and hydrochloric acid
INTRODUCTION
The rate of reaction has a special meaning for chemists they express it in terms of a change in concentration of one of the participants per unit time.
The rate of a reaction is the speed at which the reactants are converted into products or how quickly a chemical reaction occurs.
Many experiments show that for most reactions the product shows a greater rate of reaction during the start of the experiment while, the reactant shows the greatest rate of decrease at the beginning. This also shows that the rate of reaction changes with time.
The rate of a reaction is the speed at which the reaction happens. If the reaction had a low rate of reaction it would mean that the molecules in the solution would join or combine together at a slower rate than with a reaction with a high rate. Some reactions take hundreds of years while other can take up to one second; therefore the rate of reaction depends on the type of molecules that you use. This connects with the collision theory as it says that the higher the number of collisions the system, more combinations of molecules will occur, the reaction will go faster and the rate of reaction will increase.
There are also many factors that affect the rate of a reaction they are:
1. Temperature: When two chemicals react, their molecules have to collide with each other with enough energy for the reaction to take place...