Chemistry coursework rate of reaction graphs

Chemistry coursework rate of reaction graphs

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Home chemistry coursework rate of reaction graphs

How Concentration affects the rate of reaction

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The light reading falls as the sulphur precipitate forms.

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Rate of Reaction

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After having measured out the correct concentration and amount of the acid I will tip it into a conical flask containing the 1g of marble chips.

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I the only variable I will change is the temperature as this my independent variable.

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The amount of calcium carbonate is the same so that the volume of carbon dioxide produced will be the same. They produced a good graph with a smooth line of best fit.

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The calculations I used to calculate the rate of reaction was: What further experiments, using the same method or another method, could be done to support your prediction or conclusion?

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To make my results reliable I will repeat the experiment and find an average volume of carbon dioxide formed at each temperature. Why does the graph show this?

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I used these results to draw my graph of rate of reaction and time.

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We also have to be careful when we are pouring the acids into the measuring cylinder and not onto our hands. I will observe the solution and the reaction that is taking place from directly above the conical flask.

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The graph and results show that my prediction was correct:

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Write comments or questions to highlight the achievement that has been demonstrated. Essay on What Affects the Rate of Reaction?

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I also had a problem when I plotted my graph. In the middle section of the graph, the line curves and the gradient is less.

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The rate of reaction is found by measuring the amount of a reactant used up per unit of bergson essay on laughter or the amount of a product produced per unit of time. I will then plot 2 graphs showing coursewotk rate of reactions and how it affects the time taken to collect the chemistry coursework rate of reaction graphs and how the concentration of hydrochloric acid affects the time taken to collect the gas.

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When I repeat the experiment if I have any two points at the same temperature which are very different I will repeat the experiment and I will use the results which are closest together to find the average.

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In this experiment I will be testing the rate of reaction of Hydrochloric acid and Sodium Thiosulphate. This experiment will be carried out by drawing a cross on a piece of paper and mixing hydrochloric acid and sodium thiosulphate together to see if the cross disappears.

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The small opening will prevent any products that are rat from escaping. I will also wash my hands after using the acid as it is an irritant.

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You would get a similar result by increasing the temperature of the reactants, budget essay papers long as you measure the reaciton volume itself at the same temperature and pressure. By doing 4 sets of results I could spot anomalous results and I can find out why they had happened.

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If the particles have enough energy when combined to overcome the activation energy "barrier" and are correctly orientated then a reaction occurs and a new product is formed.

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The precipitate that was produced in the reaction was Sulphur and it was assessing critical thinking skills substance that made the solution cloudy and covered the bottom of the container after the liquid had evaporated. From this, I predict that the rate of reaction of more diluted sodium thiosulphate hydrochloric acid would be slower as there courdework less reactions happening in a unit of time.

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From the graph you can then describe in words what the results mean, always refer to the graph lines and gradients directly - don't make vague comments. The initial gradient courseework the product-time graph e.

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The rate of reaction is how quickly a reaction occurs and normally measures how quickly one of the reactants are used up.

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However, I don't know of any practical method of following a reaction by measuring the amount of solid formed.

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It will go cloudy and when the cross is totally obscured, I will stop the stopclock and record the time in a table. I should do another experiment to prove this theory is correct.

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BUT some of these values would be significantly different from the initial rate e. It involves a computer with special light sensitive equipment.

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If there are more effective collisions happening in a period of time then we say that the rate of reaction is quicker.

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See also the brainstorm of GCSE rates coursework-projects investigation ideas and two. I predict that with the higher concentration of enzyme, the likelihood of it breaking down molecules will be greater because there will be more enzymes to work at the substrate and the chances of it colliding will be higher making the activity time quicker

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Ensure that the effect of concentration of reactant, temperature and surface area of a solid reactant are identified. It took longer for the cross to be obscured when the concentration of the sodium thiosulphate was weaker.

The equation below shows what will happen when the sodium thiosulphate reacts with the hydrochloric acid in the conical flask

Reaction Rate Investigation Essay - Reaction Rate Investigation Planning I am trying to work out the rate of reaction between marble chips calcium carbonate and Hydrochloric acid. There are many factors, which I could change in this experiment.

Collision theory explains how chemical reactions occur and why rates of reaction differ. I know that Sulphur and Sulphur dioxide were some of the products of the reaction of Sodium thiosulphate and Hydrochloric acid from the word and chemical equations. Answers The graph which is most likely to be produced from experiment 2 is Graph C The concentration of the acid is the same as in experiment 1 so the rate or reaction will be the same.

Bring students together in a plenary. In the case of the sodium thiosulphate - acid reaction, you can leave the thermometer in the flask and take the temperature at the end, then use an average for the temperature of the reaction.

If you have detailed data e. Theory of temperature effect Graph 4. With the written feedback, students are helped so that they can recognise what they need to do, to deal with any shortcomings in their understanding of how these graphs represent changes.

I predict that with the higher concentration of enzyme, the likelihood of it breaking down molecules will be greater because there will be more enzymes to work at the substrate and the chances of it colliding will be higher making the activity time quicker I chose to use a 50ml measuring cylinder rather than a ml one because it has smaller divisions on it and is therefore more accurate. However, they will cool a little standing out in the laboratory, so not completely satisfactory solution to the problem.

The results are initially processed into graphical form 'graphing' for several reasons for both the analysis and evaluating the experimental Then, they will all be at the same temperature, which should be recorded.

In my graphs of temperature and volume of carbon dioxide formed the line of best fit shows an increase of carbon dioxide formed. I have also researched on some websites- http: As soon as I do this I will start the stopclock. It is the reaction between hydrochloric acid and marble chips. As the concentration gets weaker, the line graph curves and the gradient is less-less steep. Also when I measured the acid I tried to use the lower meniscus but in some cases I forgot to check and so some measurements might not have been completely accurate.

This means the speed has become zero as the reaction has stopped. Encourage other groups to challenge or to add to these explanations. An increase in concentration means there are more particles. I observed the solution from directly above the conical flask to judge the time in the best way.

Collision Theory Reaction Rates Essays].

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