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Effect Of Reactant Concentration On Reaction Rate . . Research

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Effect of Reactant Concentration on Reaction Rate

Research Question
What is the effect of reactant concentration on reaction rate?

Aim
To investigate the effect of reactant concentration on reaction rate.

Introduction

This experiment is based on the effect of reactant concentration on reaction rate. "Reactant concentration is the amount of the chemical and the number of molecules being used and the higher the amount of reactant the higher the reaction rate is and the lower the amount of the reactant the lower the reaction rate."(WikiAnswers,2017) Reaction rate is the speed of the reactant. Such as the reactant Sodium Thiosulfate and Hydrochloric Acid, the higher the concentration the higher the reaction rate but when water is
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Draw a black cross in a sheet of paper and place the conical flask with the 25ml Sodium thiosulfate over the black cross.
Measure 5mL of hydrochloric acid on the 5mL measuring cylinder and place it into the conical flask that was used earlier.
Pour the 5mL of hydrochloric acid into the conical flask with the Sodium thiosulfate in it and start the stopwatch as soon as the hydrochloric acid has been added.
Observe how the two solution collide with each other and stop the stopwatch as soon as the black cross cannot be seen.
Record the time it takes for the black cross to disappear and record it on a results table.
Dispose the two solutions in the conical flask and wash the flask to make sure there 's no extra solutions left.
Repeat steps 1-7 with a different concentration which is shown in Table 1.0 and repeat it for 3 trials with HCI, Na2S2O3 and distilled water.

Risk Assessment

Variables

Result
Table 1.0- Volumes of Sodium Thiosoulfate, Hydrochloric Acid and Distilled Water.

There was a lot of anomalies that was taken out of the average because it would make the result inaccurate. The anomalies were:
In trial 3 1st column- 181.2 Trial 3 2nd column- 303 Trial 1 3rd and 4th
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