• 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

# An Investigation into the rate of reaction between Hydrochloric acid and Marble Chips (Limestone).

Extracts from this document...

Introduction

Introduction This is an investigation to see what happens to the rate of reaction when you put different concentrations of Hydrochloric acid into a conical flask with Marble chips of the same mass. A rate of reaction is how quickly the two or more substances chemically combine. We measured the carbon dioxide in the measuring cylinder that is in the ice cream tub because we kept that the same so we could do the calculation for a rate of reaction. You can find this by doing a calculation: the change in the substance you are measuring divided by the time taken to get that change. The word equation for the experiment we did was: Calcium Carbonate + Hydrochloric acid. The products were Calcium Chloride, Carbon Dioxide, and Water. Sometimes we write the chemical equation because it is easier at any place or time and the equation for our experiment is: CaCo3 + 2Hcl = CaCl + Co2 + H2O Fair Test We are going to make this a fair test by keeping the same mass of marble chips, the same measuring cylinder, the same conical flask, the same amount of concentrations each time, the same amount of change in ...read more.

Middle

Scientific Knowledge My theoretical explanation is that there are more particles in the same volume of a concentrated solution so there are more collisions. More collisions mean a faster rate of reaction. If the concentration doubles the number of collisions double and so the reaction rate doubles as well. If the concentration was 0.4 and there were 16 collisions and the rate of reaction was 0.5, then the concentration was 0.8 and there were 32 collisions so the reaction rate would be 1. This would prove the scientific knowledge that I have gained. Apparatus The equipment that we are going to use are as follows: - a stopwatch, a conical flask, two measuring cylinders, an ice cream tub, a bung, a clamp stand, 5grams of marble chips, 150ml of Hydrochloric acid and an ice cream tub full of water (up to outer bit). Method 1. Collect the equipment as mentioned above. 2. Put the 5grams of marble chips in the conical flask. 3. Put the measuring cylinder full of water in the ice cream tub full of water upside down. ...read more.

Conclusion

I believe that the results agree with my prediction. Evaluation I did have some anonymous results even though I did everything that the method told me in the right order but I did not have an explanation for these results. I think that my results are good overall because they prove what I predicted and that means that the rate of reaction increases when the concentration increases. In my opinion, we could not make the accuracy of the method any higher because there was no need to make it more accurate. We could of done the measuring of the dilute Hydrochloric acid in intervals of ten but I saw no point in that because it would use up our time. I think that was not the only way of doing our particular investigation but I did not study further into this issue so I do not know any details or facts. Yes I am positive that the results of our experiment are pretty reliable because our preliminary experiments and results show similar patterns. We could extend our investigation by researching other factors that could make our results more reliable but we were not given the time to do that in class where the equipment was. ...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. ## To investigate the factors which affect the rate of reaction between marble chips and ...

Anomalous results - The circled results in my graph, appear to be anomalies, I can see that they are anomalous because they do not fit the predicted graph or the line of best fit. Furthermore, if we calculate the average amount of gas produced every second for each reaction, it

2. ## Investigation of the reaction between marble chips &amp;amp; dilute hydrochloric acid.

I made the concentration of acid first by mixing with water. The strong concentration has more hydrochloric acid than water and weak concentration has more water than hydrochloric acid. Next I set up my apparatus and put marble chips in the acid and timed how long does it take for marble chip to break down into Calcium chloride.

1. ## An Investigation to determine the factors which affect the rates of reaction between Marble ...

Apparatus and Materials: 500 ml of 2M HCL, 500ml of Distilled Water, Electronic Scales, Bung, Marble Chips, 50 cm3 measuring cylinder, 20 cm3 measuring cylinder, 1 cm3 tite pipette, conical flask, beakers, stop watch Experimental Hazards: - Hydrochloric acid is corrosive - My cause burns, and the vapour is very irritating to the respiratory system.

2. ## Investigating the rate Of reaction between Acid and marble

By heating the chemicals you raise the energy levels of the molecules involved in the reaction thus causing the molecules to move much faster and collide with greater energy resulting in a greater rate of reaction. Concentration is another factor that affects the rate of the reaction this is also the factor that my experiment is based around.

1. ## INVESTIGATING THE RATE OF REACTION BETWEEN MARBLE CHIPS AND HYDROCHLORIC ACID

The two product molecules formed fly outwards. Collisions between molecules will be more violent at higher temperatures. The higher temperatures mean higher velocities. This means there will be less time between collisions. The frequency of collisions will increase. The increased number of collisions and the greater violence of collisions results in more effective collisions.

2. ## Find out how the Acid concentration affects the rate of reaction between hydrochloric acid ...

quality of my results: * I will use an inverted burette for my main experiment so I can get more accurate results. * I will record the progress of the experiment every 10 seconds so I can make a "progress curve" graph so it is easier to compare the different reactions and calculate the rate of reaction.

1. ## An investigation to find out how the concentration of acid affects the rate of ...

the number of HCl molecules present will decrease as they react with CaCO3 molecules to produce calcium carbonate, water and carbon dioxide. Although carbon dioxide escapes into the air, the water produced will dilute the hydrochloric acid even further, so the concentration will go down, as there will be less successful collisions, as there will be less HCl molecules.

2. ## An Investigation: Factors That Affect The Rate Of Reaction between Calcium carbonate and Hydrochloric ...

stop button to stop the timer this makes it more easy to use. The digital stop watch is also precise because it measures to hundredth seconds which helped us accurately record the volumes of gas at our set intervals and making the experiment a fair test as every measurement was taken at certain time.

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