• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

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.

Extracts from this document...

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.

Conclusion

I must make sure the same person does it through out because if for example the eye sight is different then the readings would be different. -read from same distance: I must read it from the same distance so that the view stays same followed by the reading. -Use same apparatus for experiment: I must use the same apparatus to avoid the mixing of different chemicals. -read bottom layer (meniscus). I must read the bottom bit of the layer to avoid human error. In order to make sure my investment stays safe I must use the following: -goggles -gloves -apron -fire extinguisher -extracting fan I must use a table to note down my reading. I must explain my predicted graph. I must even write down the method. NO Volume of water Volume of HCL Time reading 1 Reading 2 Reading 3 Average time (sec) Concentration of Na2S2O3 1 2 3 4 5 6 I must set a graph like this and say how much concentration I am going to put in. I will take _ml and carry out through the whole experiment to keep it constant. ?? ?? ?? ?? Suleman Shaikh ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Patterns of Behaviour essays

  1. 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.

  2. Investigation of some of the factors affecting rates of reaction.

    Figure 1 shows the apparatus. Method for the concentration experiment Sodium thiosulphate will be used in five different concentrations. 50cm3 of one of these solutions of thiosulphate will be added to a conical flask and then 5cm3 of 2.00moldm-3 hydrochloric acid will be quickly poured in, mixed and at the same time a stopwatch will be started.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work