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Carbon and its uses within food
In the summer, days of very heat and sun, one always tends to cool off is with a water, juice or soda. As probably they will have already noticed, if any gas with the gas is left outdoors and heated, when opening it, a lot of gas will come out and when I try to drink, much less gas will be felt than a normal drink. This is why it occurred to me to check this and ask the question: how will the temperature affect carbon dioxide detach?
Before starting the analysis of this question you have to ask ourselves, what is a Coca Cola? It is a type of soda, that is, water to which carbonic acid and carbon dioxide (CO2) are added under pressure, among other components. This carbon dioxide is subjected to pressure on the liquid, and then placed in a closed container so that it can be kept dissolved through all the liquid. At the moment when the container suffers a change in the pressure, the gas is released from the container. This is what happens when we open the bottle lid.
When opening any type of soda, carbon dioxide begins to be released. But what causes this CO2 detachment towards the environment? Carbon dioxide inside the liquid consists of many gas molecules that are looking to be constantly released. Being under constant pressure, and in a closed environment, these molecules only have a constant movement and speed, which does not cause any significant change. Until a pressure change occurs. When opening the container lid, as the external pressure is lower than the internal pressure, the gas molecules leave to try to balance the pressure difference.
As for the relationship that this has with temperature, thanks to the General Law of Ideal Gases, we know that pressure and temperature are directly proportional. Then, by increasing the temperature of the soda, the internal pressure of the container should be increased. This is since when suffering a variation in temperature, the speed of the molecules is affected. This speed will vary the clashes against the walls of the container, which will produce a variation in the internal pressure of the system. In the event that the temperature increases, the molecules will move faster what an increase in internal system pressure will produce. Which probably causes an increase in the level of carbon dioxide detachment.
How will the temperature affect the detachment of carbon dioxide in a soda?
When the soda temperature vary, it will obviously vary its carbon dioxide detachment. It is likely that the higher the temperature of the soda is, the greater its detachment of carbon dioxide, and vice versa. This is because the particles within the container begin to move more quickly and kinetic energy, which ends up causing greater detachment from these to the environment.
- Coca Cola bottles are prepared for different temperatures. In the event that they are cold bottles, they will be put in a refrigerator. If they have to heat up, water will be placed in a heater until it hoting enough so that then that water can be placed in a precipitated glass and the bottle inside that glass. It will also be able to observe a heat transfer until it hoting enough.
- Once you have the temperature of each bottle, the bottles are going to be masted separately to ensure that they all have exactly the same mass.
- Then, the large plastic box with water at room temperature will be filled (water temperature is indifferent).
- When the water box full of water is ready, it is placed under the universal flask. The specimen is filled with this same water, it is invested without the water falling and placed on the universal flask.
- The hose is adapted with an adapter and plasticine on its sides so that there are no gas outlets to the environment.
- Is mass 1 gram of sugar
- Once the system is ready, the bottle is placed on the side of the box with water, it opens, the gram of sugar is placed and connected with the hose quickly inside the bottle.
- Changes in the specimen are observed and all the water that descended.
- The procedure 3 times for each temperature is repeated.
Some assumptions that have to be clear before starting the analysis of this experiment are for example that a plastic bottle of Coca Cola was used, since it is a well -known type of soda and easy to find. It was taken into account that this bottle was made of plastic and not glass, so carbon dioxide losses are despised through plastic pores. Also, this Coca Cola was Zero, which means that it has no sugar, therefore so that a difference can be seen. Finally, it can be assumed that all bottles had the same degree of agitation, that is, assuming that they all have the same temperature, they would all give off the same amount of gas.
It can be seen in Table No. 1 as as the temperature increases (column 1), the volume of CO2 also does (column 3). It can also be seen to reduce the random error of the samples, s took 3 data for each measure, and in columns 2 and 4 the average values were removed for both the temperature and for the volume of CO2 respectively.
It can be seen both in the graph and in the table that the detachment of CO2 against variations in temperature has a strict relationship. By increasing the liquid temperature, the kinetic energy of the particles increases, that is, the average speed of the particles increases. Then, by increasing the average kinetic energy of the particles, intermolecular forces weaken. This decrease in intermolecular forces produces the release of carbon dioxide in the liquid thus forming a relationship between this and the temperature.
On the other hand, taking into account that the sugar was added to favor the detachment of CO2, I realized that this, when added, produced more gas than normal, especially at a higher temperature. This may be due to liquid solubility. The liquid by increasing its temperature, also increases its solubility. Being more soluble than the same liquid at a lower temperature, added sugar as a catalyst is going to dissolve better. Finally, it must be taken into account that the errors were considered within the graph, but they are very small in relation to the values of the measures.
Conclusion and evaluation:
To conclude, it can be said that there is clearly a relationship between the temperature and the detachment of CO2 of a completely closed bottle. This can be explained because, at a higher temperature, gas molecules begin to move more quickly inside the container. This will produce an increase in internal system pressure, thus increasing the variation between external pressure with internal pressure. The higher this pressure variation, the greater the detachment of CO2 will be from the bottle to the outside. This can be seen clearly reflected in Graph No. 1, since it can be seen that clearly reflects a proportionality ratio, since producing an increase in the temperature of the bottle, more gas molecules are detached to the exterior. This behavior proves our aforementioned hypothesis, which was “varying the soda temperature will obviously vary its carbon dioxide detachment. It is likely that the higher the temperature of the soda is, the greater its detachment of carbon dioxide, and vice versa ”.
Although the mentioned hypothesis has been proven, and that it gave a graph with a clear proportionality relationship, it can be affirmed that both random and systematic mistakes could have been made. Taking into account random errors, although the absolute error of the measures was very low, it must be taken into account that very few measurements were made for each temperature. This type of error could have been significantly reduced by taking 7 or 8 measures for each temperature. But doing this would cost a higher cost since the price for each bottle is high, and the resources are limited. On the other hand, now seeing the systematic errors of the experiment, as the first possible error you can have to time since the sugar is placed as a catalyst inside the bottle, until you can cover this with the hose there could not be if always the same,thus affecting the final measure. This is since CO2 could have begun to be released since the bottle was opened until it was closed, and being many different repetitions, more carbon dioxide could have left the environment in some measures. Also, the most significant error that this experiment could have had was the use of plasticine to cover the spaces between the hose and the width of the bottle peak. This is that, despite the fact that the plasticine has very few pores through which gas can be escaped, I can have made mistakes when placing this around, leaving free spaces that allowed péquelas of carbon dioxide leaks to the environment, instead ofgo through the flask.
Finally, some improvements could have been considered to this experiment such as making a better plasticine adapter to the bottle. That is, a perfect adapter that avoids any detachment and gas towards the environment, and that all gas goes to the flask to be able to measure exactly the level of CO2 detached in this experiment. Also, it could have been avoided to open the bottle to put the sugar, since this would reduce the time in which carbon dioxide begins to detach, which would make the data more exact and precise.