• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3

# The effect of changing concentration of sodium thiosulphate on the rate of reaction between sodium thiosulphate and hydrochloric acid.

Extracts from this document...

Introduction

The effect of changing concentration of sodiumthiosulphate on the rate of reaction between sodium thiosulphate and hydrochloric acid What we are trying to do - we are trying to find out whether changing the concentration of a chemical (sodiumthiosulphate) will increase or decrease the rate of reaction. We will notice the speed of the reaction because the particles will collide either more or less. The higher the concentration of thiosulphate the more the particles will collide into each other and create a chemical reaction, the more they collide into each other, the faster and the greater the chemical reaction will be. A chemical reaction is when two or more compounds are chemically joined. Prediction- I predict that the higher the concentration of sodiumthiosulphate the faster the chemical reaction will happen the reason I predict that this will happen is because the higher the concentration of thiosulphate the more the particles will collide into each other, causing a greater chemical reaction. ...read more.

Middle

* Place chonical flask on cross which is on the white tile. * Pour 10cm3 of hydrochloric acid into a test tube.(you only need 10cm3 for each experiment) * Pour required amount of sodium thiosulphate into a measuring cylinder for the first experiment you will need 60cm3 or thiosulphate, for the second you will need 50cm3, for the third you will need 40cm3, for the fourth you will need 30cm3, for the fifth you will need 20cm3 and for the sixth you will need 10cm3 * Pour the required amount of water into a measuring cylinder. for the first experiment you will need o cm3 of water, for the second you will need 10cm3, for the third you will need 20 cm3, for the fourth you will need 30 cm3, for the fifth you will need 40cm3 and for the sixth you will need 50cm3 or water. ...read more.

Conclusion

On my graph m results were a curved line this means that the rate of which the reaction took place slowed down as the concentration of the sodiumthiosulphate was decrease. The only thing that went wrong with my experiment was that the results were not as accurate as they might have been if they were done using electronic equipment or doing more experiments. Conclusion- when I predicted that the rate of which the sodiumthiosulphate would react with the hydrochloric acid I predicted that it would increase as the concentration was increased. This is because the higher the concentration of thiosulphate the more the particles will collide into each other and create a chemical reaction, the more they bump into each other, the faster and the greater the chemical reaction will be. The chemical equation for the experiment is this: Sodiumthiosulphate + hydrochloric acid = sald+water+so2+s Mark Austen Form: 106:NJP 04/05/07 Mark Austen Form: 106:NJP 04/05/07 ...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

# Related GCSE Patterns of Behaviour essays

1. ## Investigating the Effect of Concentration on the Rate of Reaction between Hydrochloric Acid and ...

3 star(s)

steps I will take to try to make my experiment safer and to eliminate any possible hazards: * Gas produced: sulphur dioxide will be produced in my experiment. This gas is irritating to the lungs and is dangerous to asthmatics.

Its not bullying, its not because I'm new and it's not because I've got no friends. I've got plenty. Its because of my brother. I know that sounds weird. I mean, I bet you can think of loads of people with brothers, but, how many of those people have brothers who are, well, famous?

1. ## Measuring the reaction rate of sodium thiosulphate in hydrochloric acid

from view during the reaction (the other containers were too large and as a result their chemical layers were too thin). As for our measuring cylinders, we settled on 50ml for ease of use. At first, we were unsure which amount of chemicals would be best, so we tested them (see table 1).

2. ## An Experiment to Investigate the Effect of Changing the Concentration of Hydrochloric Acid on ...

Reading 2 (s) Reading 3 (s) Average Reading (s) Rate of Reaction (arbituary units) 0 none none none none none 0.2 78 39 54 57 0.02 0.4 38 47 28 38 0.03 0.6 45 34 53 37 0.03 Control Variables I need to explain how and why I kept key variables other than hydrochloric concentration constant.

1. ## An investigation into the effect of Concentration of Sodium Thiosulphate on the rate of ...

If these weren't controlled, they would make the experiment un-reliable. The experiment would become un-reliable because each of the variables would be acting differently with each other, thus, therefore, making the results inaccurate. Safety To keep the practical safe, we must wear goggles, tie long hair back, move bags and

2. ## The reaction between Sodium Thiosulphate and Hydrochloric Acid.

Surface Area: - Surface area also affects the rate of a reaction. The larger the surface area the faster the reaction rate. If something has a very small surface area then it will take a long time to react because the particles are less likely to collide because there is a smaller area to collide with.

1. ## Find out how changing the concentration of Sodium Thiosulphate in a sodium thiosulphate and ...

This is one of the constants in the experiment and by keeping it the same, it makes the results more accurate. Another constant in the experiment is temperature and we did nothing to the temperature so the experiment was at room temperature, which stayed roughly the same throughout the experiment.

2. ## Effects of Concentration of Sodium Thiosulphate in the reaction of Hydrochloric Acid and Sodium ...

Procedure Diagram of Apparatus Method 1. Set up apparatus as shown above with the conical flask on top of the tile with the 'X' on it. 2. Using the 10ml measuring cylinder, measure out 10ml of HCl. 3. Using the 50ml measuring cylinder, measure out 50ml of Sodium Thiosulphate.

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