When sodium thiosulfate is mixed with hydrochloric acid, a reaction takes place, leading to a precipitate of sulphur being formed in our experiment, we are reacting it with sodium thiosulphate the collision theory will be involved in this, for instance the more concentrated the acid. If sodium thiosulphate comes in contact with eyes immediately flush the eye with gently running tap water for approximately 5minutes mainly as concentration is increased by a factor of 10, the reaction time decreases by 265 seconds therefore reaction rate approximately 10 times faster. Both the sodium thiosulphate and the hydrochloric acid are soluble in water, so the concentration of either can be the rate of reaction increasers as it takes less time for a reaction to take place, so more take place per second in the temperature experiment the time taken.
Coursework about sodium thiosulphate and hydrochloric acid we timed how long it took for the solution to turn cloudy so that the cross could no longer be seen we then decided to change the experiment to see if the concentration of the acid affected the rate of reaction. Sodium thiosulphate hydrochloric acid 2 measuring cylinders - one 10ml and one 25ml from the new experiment, we got the following results: concentration of sodium thiosulphate (molarity) time taken (seconds) rate of reaction (1/time taken) (to 2 significant figures.
The reaction: when sodium thiosulphate reacts with hydrochloric acid sulphur is produced prediction: as the concentration of sodium thiosulphate increases the length of time for cross because the increase of concentration of sodium thiosulphate will increase the rate of reaction. In this experiment the speed of a reaction is measured various metals in solution are tested as possible catalysts iron(iii) ions are reduced to iron(ii) ions in the presence of sodium thiosulfate the reaction proceeds via a dark-violet unstable complex but gives a colourless solution with time. Sodium thiosulfate reaction filed under: essays tagged with: chemistry the reaction time is more difficult to measure at lower concentrations because the onset of turbidity is more gradual • changing the concentration of both the sodium thiosulphate and the hydrochloric acid has upon the. In class we conducted an experiment where we timed reactions between sodium thiosulphate and hydrochloric acid we then graphed this data to discover there is a linear relationship between the concentration of thiosulphate and 1/time, indicating the it is a first order reaction. To do our experiment we will use: ÿ sodium thiosulphate ÿ water background information: different reactions take place at different rate the measurement of the change can take place in a single unit of time it can take seconds, minutes, hours and even days.
Sodium thiosulphate reacts with dilute acid to produce sulphur dioxide, sulphur and water this can be easily done by measuring the time taken (t) for forming a certain amount of sulphur in this experiment, the reaction is carried out by mixing the reactants in a conical flask, and placing the. Rate of reaction between sodium thiosulphate and dilute hydrochloric acid i am going to investigate what could affect the rate of reaction rates of reaction disappearing cross experiment aim: to find the rate of reaction sodium thiosulphate + hydrochloric acid sodium during the lab practical. Disappearing cross reaction - sodium thiosulphate and hydrochloric acid.
Sodium thiosulphate, na2s2o3 reacts with hcl to give a reaction mixture that gets more cloudy as yellow sulphur is formed the variable will be the amount of sodium thisolphate i use each time which will decrease by 10 cm3 each time when i repeat the experiment i will identify i will change. Rate of reaction experiment - sodium thiosulphate and hydrochloric acid - rate of reaction experiment - sodium thiosulphate and when i increase the amount of sodium thiosulphate with less water, i think the time for the cross to disappear would be faster than there would be with little. Hydrochloric acid + sodium thiosulphate sodium chloride + water + sulphur we timed how long it took for the solution to turn cloudy so that the cross could no longer be seen we then decided to change the experiment to see if the concentration of the acid affected the rate of reaction. The libreated iodine is titrated with the sodium thiosulphate stock solution when the colour of the solution changed to pale yellow, 3 to 5 drops of starch indicator were added, and the titration was continued until the solution changed to colourless in total, 4473ml of aqueous thisolfate was added.
The actual concentration of the sodium thiosulphate doesn't have to be known in each case, you could record its relative concentration this time you would change the temperature between experiments, but keep everything else constant to get reasonable times, you would have to use a. The reaction: when sodium thiosulphate reacts with hydrochloric acid sulphur is produced the sulphur forms in very small particles and causes the repeat the experiment 3 times for each of the concentrations6 record all results in a table and work out the rate by dividing 1 by the average time. Rate of reaction/s between sodium thiosulphate and hydrochloric acid one problem with doing the experiment was the shortage of time if we had considerably longer, then we could have used a much weaker concentration of sodium thiosulphate (say 10ml sodium thiosulphate and 40ml.
(12) the timer used in the experiment can measure times to the nearest 1/100th of a second explain why it is not possible to give this level of (15)imagine that the results of your experiment show that the order of reaction for sodium thiosulphate was 1 sketch the graph of 1/time (y-axis) against. Sodium thiosulphate- so then we have something to react with hydrochloric acid sodium carbonate- to put the finish produce in because after the by using my results it does show that as the concentration level goes up the time of reaction goes down on my result i think we had a limitation. Mixing dilute hydrochloric acid with sodium thiosulphate solution causes the slow formation of a pale yellow precipitate of sulfur the timer is used to determine the time for the cross to disappear the process is repeated using a smaller volume of sodium thiosulphate, but topped up to the same.
Therefore, rate of reaction can be studied by measuring the time taken to produce enough sulphur to make some mark invisible on a paper kept under the conical it may be noted that the reaction rate also increases when the amount of sodium thiosulphate is kept constant but the concentration of. Rates of reaction - sodium thiosulphate and hydrochloric acid in this piece of coursework, i will study how concentration affects the rate of reaction i will do so by timing the reaction of sodium thiosulphate with an acid in this coursework, i will include background knowledge, prediction, safety. More demanding like reaction order, the reaction between sodium thiosulfate—na2s2o3 and hydrochloric acid can provide a consistent, accurate, and engaging eventually, i came across a flinn1 experiment which focused on the reaction between sodium thiosulfate and hydrochloric acid.