This website uses cookies to ensure you have the best experience. Learn more

Rate Of Reaction Of Dilute Hydrochloric Acid And Sodium Thiosulphate

2323 words - 10 pages

Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate

To investigate the change in rate of reaction between DILUTE HYDROCHLORIC
ACID and SODIUM THIOSULPHATE as the concentration varies.


A chemical reaction takes place over a specific period of time i.e.
which is the time for the reactants to be formed into the products. If
the reactants take a relatively short time to form the products, the
reaction is known as a FAST one. The RATE of that particular reaction
is high. On the other hand, a reaction which takes a longer time is
known as a SLOW reaction, and as a result is known to have a LOW rate
of reaction.

There are several factors which alter can ...view middle of the document...

So, in other words,
they reduce activation energy levels. A catalyst works by increasing
the chances of particles colliding by providing a ‘sticky’ surface on
which particles stick onto and have a collision. Therefore the greater
the size of the catalyst, the higher the rate of reaction.

Constant: A catalyst won’t be used in our experiment.

PARTICLE SIZE- Obviously, as the surface area of a reactant increases
(solid), there is more space for particles to work on and react, and
therefore this results in more reactions.

Constant: As no solid is involved in our experiment, the particle size
theory doesn’t matter.

LIGHT- Some chemical reactions are speeded up with light, and not only
with heat. For example, silver is formed from silver salts when a
photographic film is exposed to light. On the other hand, green plants
absorb sunlight for photosynthesis, and the more that is absorbed, the
higher the rate of reaction.

Constant: Light is irrelevant to our experiment, so there need not be
any control over it.

PRESSURE- Pressure applies only to reactions between gases, and as the
pressure increases, so does the speed of the reaction. The reason
behind this is that increasing the pressure pushes the gas molecules
closer towards each other, and so increasing the chances of the gas
particles colliding, causing the reaction to take place at a faster

Constant: Pressure is inappropriate to our experiment as no gases are
involved, rather liquids.

In this investigation, we shall be investigating the effect of changes
in concentration on the rate of reaction, and the two chemicals which
shall be used will be Sodium Thiosulphate and Hydrochloric Acid.

Another point to make is that in order to keep the experiment fair,
the ‘cross’ must be kept the same. The easiest way to do this is to
use the same cross for the entire experiment, or else the results
would go unwittingly wrong. A thicker cross on a different paper in
the same experiment would take longer than normal to ‘disappear’,
whereas a thinner one would take a shorter amount of time, so it’s
very important to keep it the same.


I predict that the greater the concentration of one of the solutions,
whilst the other remains constant, the greater the rate of reaction.
This is because, as explained by the collision theory, in a more
concentrated solution, the ions are closer together because they exist
in a greater number. Therefore, the closer they are to each other and
the higher their numbers, there is a greater chance of successful
collisions, and when there is a greater chance of collisions taking
place, there is a greater chance of a reaction occurring and therefore
the reaction should take place quicker.

Where there are more particles in a confined zone, such as the beaker,
there will be more collisions between them. This results in more
reactions taking place, which in turn increases the rate of reaction.


Other Essays Like Rate Of Reaction Of Dilute Hydrochloric Acid And Sodium Thiosulphate

GCSE Science Coursework - Investigating the factors that affect the reaction between sodiumthiosulphate and hydrochloric acid

415 words - 2 pages Investigating the factors that affect the reaction between sodiumthiosulphate and hydrochloric acidAim:To investigate the differences in rate of reaction between sodiumthiosulphate and hydrochloric acid as the concentration of sodiumthiosulphate is either raised or lowered while keeping the total volume of the sodiumthiosulphate solution at 50cm .The chemical reaction for this experiment is:Method:I start with 5cm of hydrochloric acid to which I

Acid-Base Titration: Determination of the Percentages (%) of Sodium Carbonate (Na2Co3) and Sodium Hydroxide (Naoh) in a Mixture

1061 words - 5 pages Title Acid-base titration: Determination of the percentages (%) of sodium carbonate (Na2CO3) and sodium hydroxide (NaOH) in a mixture Objective To determine the respective weight per cent of sodium carbonate and sodium hydroxide in a mixture by acid-base titration. Result and calculation Part A Titration 1 Titration number 1 2 3 Initial volume of burette( cm3) 5.10 2.70 9.70 Final volume of burette (cm3) 34.40

The Rate Of Reaction Of Succinate Dehydrogenase

1537 words - 7 pages environment. Each enzyme has a temperature and pH level at which its activity is greatest and the reaction it catalyses proceeds at its fastest rate. The rate of enzyme-catalysed reactions increases as the temperature and pH balances approach its optimum level. At higher or lower temperatures and pH balances, the enzyme molecules become damaged or 'denatured'. They cannot catalyse the reaction very well, if at all, and the damage is usually permanent

Investigating Some Factors Which Affect The Rate Of Reaction

945 words - 4 pages will be faster.·Pressure - When reactions are taking place between gases, increasing the pressure will increase the rate of reaction. This is very similar to the affect concentration has. The molecules are in a more compact space and closer together so more collisions can take place.In the following experiment, the effect of concentration on the rate of reaction between hydrochloric acid and sodium thiosulphate will be investigated

Effect of Concentration on the Rate of Reaction

671 words - 3 pages + 2SO42- (1b) It is important however to note that the NH4 and K ions are still in the solution, they are just unreactive. In order to measure the rate of the reaction, the conventional method would be to measure the species in question at certain times. However, this would be inconvenient, especially for a three hour laboratory period. Since the iodide ion can be oxidized by the persulphate ion, we can use sodium thiosulphate to be an

Production and Market of Enoxaparin Sodium Injection in China

606 words - 3 pages May., 28, 2016, Mumbai, India: Market Reports on China presents the report, on “Production and Market of Enoxaparin Sodium Injection in China”. This report provide readers with comprehensive & in-depth understanding of Chinese enoxaparin sodium injection industry. 1.INTRODUCTION In this report, analyzes the investment opportunities of China’s enoxaparin sodium injection industry. It will provide you with a comprehensive understanding of

The Effect Of Varying Heart Rate On Choice Reaction Time In Young, Physically Active Males

1025 words - 5 pages in particular whose ability to react may be dependant on their arousal level. It has been shown that an ideal (optimum) heart rate can be achieved in order to minimise an individual’s choice reaction time. However, there is a lack of evidence supporting this notion to the physically active, young population and it is for this reason, that it is imperative that we forego this experiment. Methodology Experimental Design: A total of six, young

Rate of Photosynthesis and How It Varies

851 words - 4 pages plants. The enzymes work best at approximately 37 degrees to survive within the hot waters of springs such as those in Greenland and other areas which are usually very cold. If the temperature Celsius. Although there are many enzymes adapted to perform at an optimum rate at temperatures much higher, there are some which are able is to high, this will denature the enzymes and thus, will also cause the rate of reaction of

Rate of Reactions

673 words - 3 pages Laboratory Report The Rate of Reactions Abqari Afandi Grade 10 October 6th 2014 Purpose: To investigate the relationship between the temperatures of Hydrochloric acid with the duration of Magnesium ribbon to dissolve in the acid. Procedure: 1- Prepare four 400ml beaker: one for the hot bath, one for the room temperature, one for ice water bath and one for super hot bath. Fill all beakers half-full. Put one on a hot plate

Experiment on Rates of Reaction

780 words - 4 pages concentration of acid, the quicker the reaction is going to take place. Main Experiment: Aim: Our aim of this experiment was to investigate the effect of concentration on rates of reaction using different concentrations of sodium thiosulphate and hydrochloric acids. Prediction: I thought that the higher the concentration that we used, the test was going to be a lot quicker but the lower the concentration, the test

Chemistry Rates of Reaction Coursework

5365 words - 22 pages Meter 10 Gas Collection 10 Strand Eb 11 Data Analysis 11 Graph Evaluation 11 Strand Ra 12 Secondary Data 1 12 Secondary Data 2 13 Secondary Data 3 14 Strand Rb 15 Conclusion 15 Bibliography 16 Strand Sa The Science In the experiment, I will be testing how increasing the concentration of the reactant affects the rate of reaction between hydrochloric acid and sodium thiosulfate .Due to Max Trautz’s collision theory, which

Related Papers

Rates Of Reaction: Sodium Thiosulphate + Hydrochloric Acid

1492 words - 6 pages Rates of reaction:- sodium thiosulphate + hydrochloric acid Plan:- We must produce a piece of coursework investigating the rates of reaction, and the effect that changing one particular variable has on the reaction time. The rate of reaction is the time it takes one or more of the reactants to react or the time it takes to produce a new product from a chemical reaction. To work out the reaction time we use the formula. 1 divided by

The Effect Of Temperature On The Rate Of Reaction Between Sodium Thiosulphate And Hydrochloric Acid

1841 words - 8 pages The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid I predict that as the temperature is increased the rate of reaction will increase. This means that the graph drawn up in my analysis will have positive link so it will look something like shown below, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased

Sodium Thiosulphate Rates Of Reaction Essay

1883 words - 8 pages Sodium Thiosulphate Rates of Reaction During this investigation I am going to investigate the rates of reactions and which changes will affect this rate. A rate of reaction is when a reactant is lost or a new product is formed during a chemical reaction. I am going to investigate the effect of concentration by mixing Sodium Thiosulphate, Hydrochloric Acid and H2O (water) until the reaction takes place and the

An Investigation To Find Out How The Concentration Of Hydrochloric Acid Affects The Rate Of Reaction With Calcium Carbonate

2741 words - 11 pages results The collision theory proved to work in my experiments. As I'd predicted, the more concentration of hydrochloric acid, the faster the rate of reaction. This theory worked in all of my experiments and because of the successful collisions, the reactions were faster when a higher molar concentration was added. From the 'chemistry for you' book, it had shown a diagram for the rate of reactions. It showed a diagram