The Rate of a reaction can be represented as: These reactions only happen if the reacting molecules collide properly. Die gesuchte Seite konnte nicht gefunden werden oder ein Fehler ist aufgetreten. Remember me on this computer. The rate of reaction is the rate of loss of a reactant or the coursework thiosulphate formation of a product during a chemical reaction Free Essays words 6. Limitations My limitations could have been:
Hydrochloric acid is colourless, poisonous and highly acidic. Sorry, but copying text is not allowed on this site. On my ROR graph, there is a positive correlation. I then drew up graphs for my results Data Concentration Test Test 2 Test 3 M 1 s s s 1 2 3 4 5 Table 1: Graphs All of the graphs that I drew for this investigation show a negative correlation.
Burning and explosions are very fast reactions: This causes a quicker reaction.
Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid
However as only one variable can be changed I will keep one reactant constant whilst changing the other to get a fair set of results. The dependent variable is the one that cpursework be monitored in the reaction.
Reactions that happen quickly have a high rate of reaction. Rates of reaction vary depending on which chemicals are being used and the activation energy required. Hydrochloric acid is colourless, poisonous and highly acidic.
Sodium Thiosulphate and Hydrochloric Acid Coursework Essay Example for Free – Sample words
Improvements I could have used greater or a more systematic range of temperatures.
Free Essays words 4. Papers] Research Papers words 3. This will show me the affect of each reactant on the rate independently. My Error bar graph shows a negative correlation. This time add 25cm3 of Na2S2O3 into the bottom of the conical flask before recording the time taken for the cross to disappear again, for all the concentrations.
When using the graduated there was an error of 0. In this reaction the solution turns milky yellow as sulphate is displaced and forms a solid precipitate. However the overall order for the reaction cannot be calculated using the stoichiometry in the sldium equation.
Dependent variables are not controlled by the experimenter. Building Book Love For example. I coursework thiosulphtae linkedin going to investigate the effect of chemistrysodium the concentration of Sodium Thiosulphate on the rate of the reaction between Hydrochloric Acid and Sodium Thiosulphate. For example, when my concentration was 1M the average reaction time was seconds, and then when the concentration was 5M the average reaction time was seconds.
I think that my method for my investigation is easy to follow. Finally I will not shake or move the conical flask once the reactants have been put together as this again might affect the rate of the reaction. Secondly draw a black cross onto a piece of paper which is no bigger than the base of the conical flask, place the conical flask on top of the flask. I could have use a colorimeter to identify colour changes in the products.
Oops, we could not find the requested page. There concentratiion one outlier in 2M concentration.
I then drew up graphs for my results Data Concentration Test Test 2 Test 3 M 1 s s s 1 2 3 4 5 Table 1: There will also be an accuracy issue as there is a reaction time in realising the cross has disappeared and stopping the stopwatch.
This could have happened because of calculation errors, human errors, recording errors hydrkchloric a fault with the equipment that we used. This quantitative method of measuring should make the results more accurate. Whilst standing above the conical flask, looking directly down, simultaneously pour concentratoon first concentration of Na2S2O3 into the conical flash and start the stopwatch.