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Variables Other variables which may affect the outcome of this experiment, if not kept constant, are as follows: Temperature Of Sodium Thiosulphate - I believe that the hotter the temperature, the faster the rate of reaction. This is because when a substance is heated up, each particle has more energy, resulting in more collisions between the free moving particles in a liquid, causing more particles to react, therefore increasing the overall rate of reaction. The second effect this has is that the particles collide with more force, increasing the chance of the particles reacting. I will keep this variable constant so that it does not affect the results by avoiding heating the sodium thiosulphate in any way, and so it will stay at room temperature. Concentration Of Hydrochloric Acid- The more concentrated the hydrochloric acid, the faster the reaction will be, because there will be more particles in the same volume. Cabbages. The particles will be closer together, colliding more often, therefore increasing the speed of the overall reaction. I will keep the concentration of hydrochloric acid constant, by using it from the same bottle each time, which has a fixed concentration.
Approximate Word count = 761
Approximate Pages = 3
(250 words per page double spaced)
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