• 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

# How temperature affects the rate of reaction between sodium thiosulphate and hydrochloric acid.

Extracts from this document...

Introduction

Temp Affecting Reaction Rate We are going to try to find out how temperature affects the rate of reaction between sodium thiosulphate and hydrochloric acid. Na2 S2 O3 + 2HCL ? S(s) + SO2 +NACL + H2O I am going to heat the sodium thiosulphate to five different temperatures, 0?c, 20?c, 40?c, 60?c and 80?c. The sodium thiosulphate concentration will be 20gm/litre. I have chosen this concentration because the results we will obtain will have a wider range. I think this is the case because when we performed the preliminary experiment of how concentration affects the rate of reaction, we came to the conclusion that sodium thiosulphate at 40gm/litre reacted faster than sodium thiosulphate at 10gm/litre. The 40 gm/litre reacted after 30 secs; 30gm/litre after 43 secs, 20gm/litre after 55 secs and 10gm/litre after 93 secs. These results would be ether too quick to precisely record, or too slow to have a range. ...read more.

Middle

Our preliminary results showed that the higher the concentration of sodium thiosulphate, the quicker the reaction, so in theory the highest temperature at 40gm/litre, the quicker the reaction compared to the lowest temperature at 10gm/litre. The results we obtained from our preliminary experiment were backed up by the collision theory: The more collisions between particles at a given time, the faster the reaction. This theory also helps me come to my prediction of the hotter the solution the quicker the reaction. Temp Affecting Reaction Rate Results: Temp ?c Time s (1st time) Time s (2nd time) 80 2.91 3.1 60 7.29 8.42 40 15.89 14.37 20 48.63 50.10 0 99.78 102.2 GRAPH ATTATCHED From my results I can clearly see that the heat affects the reaction rate massively, the hotter the solution the quicker the reaction. My results show this and there is a curve in the graph, which shows this also. ...read more.

Conclusion

I feel the way we performed the experiment was good enough to get useful results and it was an overall successful experiment. The two sets of results that I obtained were never further than three seconds apart from each other, which is close enough to rely on and base a good conclusion on. The results have been backed up by information, the collision theory and the prediction, which I feel is strong enough to reach the conclusion that I have. If I were to further my research into rate of reactions under different temperatures, I would conduct the same experiment, but maybe go into more detail such as different concentrations of sodium thiosulphate, or different amounts of hydrochloric acid, and also put the solution under a larger range of temperatures i.e. -20?c up to 100?c. Overall I feel that even this kind of experiment would produce the same pattern of results and I would still come to the same conclusion that I have. ...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. ## Investigation to find out how temperature affects the rate of reaction between Sodium Thiosulphate ...

If a bond is made energy is used up. An exothermic reaction means that there are more bonds broken than there are made, will results in heat energy being given out. This exothermic reaction means that the temperature will affect the results, as heat is being generated when the reactants are reacting.

2. ## Investigate how temperature affects the rate of reaction in the reaction of Sodium thiosulphate ...

I will then place this on tripod and heat it using a Bunsen burner until the temperature is 30�C, this will be measured using a thermometer. 5. I will then pour this into a conical flask that will be placed on the cross I drew earlier and it will also contain the 30ml of hydrochloric acid.

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