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# Rates of reaction. Before I carry out my experiments I will have to draw up a plan to ensure that the experiments are carried out properly. Below is a few things that is essential in a plan:1) Factors: I must have a factor for everything.

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Introduction

I have been set a task to investigate the rates of reaction. Before I carry out my experiments I will have to draw up a plan to ensure that the experiments are carried out properly. Below is a few things that is essential in a plan: 1) Factors: I must have a factor for everything. 2) Explain Factor: I must explain all of the factors. 3) Explain Concentration: I must explain how much concentration I put in to my investment. 4) Preliminary Experiment: This document describes identified hazards of an experiment and the measures taken to eliminate, control or mitigate them. Particular attention must be paid to the analysis and evaluation of conditions that may pose special safety problems. 5) Hypothesis: I must give a set of evidence for every single step I do to my prove my experiment goes right. 6) Variable - Control variable: I must make sure that it is held constant or whose impact is removed in order to analyze the relationship between other variables without interference, or within subgroups of the control variable. ...read more.

Middle

Surface area: the larger surface area the quicker the reaction. Large particles have a small surface area in relation to their volume; fewer particles are exposed and available for collisions. This means less collisions and a slower reaction. The reaction rate is slower. However, small particles have a large surface area in relation to their volume; more particles are exposed and available for collisions. This means more collisions and a faster reaction. The reaction is faster. Pressure: the more pressure I give it the quicker the reaction goes. Volume of Na2S2O3: I must make sure I keep the volume of the chemicals. Volume of HCL: I must make sure I keep the volume of the chemicals. Concentration of HCL: I must make sure I know how much HCL I am going to be putting. I will add ... ml distilled water to reduce the concentration of sodium thisulphate (Na2S2O3) -list of apparatus. 1) beaker 2) ...read more.

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# Related GCSE Patterns of Behaviour essays

1. ## Investigation of some of the factors affecting rates of reaction.

Sodium thiosulphate for this experiment was used at a constant concentration of 0.03moldm-3, and the acid was also constant at 2.00moldm-3. Heating was carried out by placing the sodium thiosulphate into the conical flask and placing over a blue Bunsen flame.

2. ## Rates of Reaction experiments

Temperature 2. Concentration of chemicals 3. Surface area 4. The introduction of a catalyst Temperature If the temperature of the reaction is increased, it speeds up the rate of reaction. This is because when heat is added, particles are given more energy.

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