Proyecto Integrado
lunes, 17 de noviembre de 2014
Objective
The objective of our experiment is to proof if there is any kind of relationship between the height of the resulting black-foam structure and the amount of p-nitro aniline (C6H6N2O2) that reacts with a constant amount of hydrosulfuric acid (H2SO4)
Hypothesis
Whenever the amount of solute changes we will appreciate a direct relationship between the volume of the resulting foam structure and the amount of solute (p-nitroaniline) in the solution (p-nitroaniline and hydrosulfuric acid).
Variables
- Dependent variable: The resulting foam structure
- Independent variable: The amount of p-nitroaniline for each trial
- Controlled variable: Amount of sulphuric acid (5ml), the container in which the reaction takes place and the concentration of the hydrosulfuric acid.
Materials
To work out the molarity of the sulphuric acid knowing that the concentration is 96% and that the density in one litre is of 1840g, we work out the mass and divide it by the molecular mass.
96% of 1840= 1766,4g
Molarity= 1766,4/ 98,07= 18,011 g/mol
96% of 1840= 1766,4g
Molarity= 1766,4/ 98,07= 18,011 g/mol
- P-nitroaniline
- Spoon
- Scale
- Bunsen burner
- Tripod for the bunsen burner
- Pipette
- Goggles
- Masks
- Flask
- Small bowl (container)
miércoles, 8 de octubre de 2014
Method of the experiment
- Measure the amount in grams of p-nitro aniline for that particular case: we will be making 5 trials by each measurement, in order to obtain reliable data. These are the seven amounts of p-nitro aniline (g): 5; 6; 7; 8; 9; 10; 11.
- Connect the bunsen burner until a visible (between blue and orange colour) flame appears.
- After having measured the amount of p-nitro aniline, we will place the small bowl on top of the bunsen burner and spill 5 ml of hydrosulfuric acid H2SO4.
- Wait until it heats up and the reaction takes place.
- After exploding we will measure the height of the black-foam structure from one of its sides, so that if it is tilted we won't take into account the difference in the curve. We will ass well measure the diameter of the black-foam structure (for this take a bottom measurement of the structure and one from the top of it and make an avarage), that will be very similar to a cylinder.
- Make a table with the collected data.
- Calculate the aproximate volume for each black-foam structure, through this formula:
- Finally observe if there is a direct relationship between the amount of p-nitro aniline and the aproximate volume of the black-foam structure, that will increase every time more p-nitro aniline reacts with the hydrosulfuric acid.
miércoles, 24 de septiembre de 2014
Bibliography
- Es.wikipedia.org,. (2014). P-nitroanilina. Retrieved 17
November 2014, from http://es.wikipedia.org/wiki/P-nitroanilina
- Wikihow.com,. (2014). Volume of a
Cylinder Cheat Sheet - wikiHow. Retrieved 17 November 2014, from
http://www.wikihow.com/Sample/Volume-of-a-Cylinder-Diagram
- YouTube,. (2014). EXP 1.
Explosive Polymerization of p Nitro Aniline. Retrieved 17 November 2014,
from https://www.youtube.com/watch?v=h4pNXAtPJp8
- Poshkus, A., & Parker, J. (1970). Studies on nitroaniline–sulfuric
acid compositions: Aphrogenic pyrostats. Journal Of Applied Polymer Science, 14(8),
2049-2064. doi:10.1002/app.1970.070140813
Es.wikipedia.org,. (2014). P-nitroanilina.
Retrieved 17 November 2014, from http://es.wikipedia.org/wiki/P-nitroanilina
On this web
page we have all the information of the P-nitroaniline. Here, on the web we
have the chemical components and everything in relation with P-nitroaniline,
for example observing this web page we know that P-nitroaniline is used for
some medicines and also for fuel. Also on this web we have some theory about
the toxic things of the P-nitroaniline. The bad part about this web page is the
main web page, I mean, this information is located on Wikipedia, and there the information
is not 100% truthful.
Wikihow.com,. (2014). Volume of a Cylinder
Cheat Sheet - wikiHow. Retrieved 17 November 2014, from http://www.wikihow.com/Sample/Volume-of-a-Cylinder-Diagram
By looking
this web page, we see that on this one, appears two perfect diagrams, in those
diagrams we have a cylinder or beaker. During the experiment we are going to
calculate the area of a cylinder, I mean, after the explosion, the resultant
piece of carbon looks like a cylinder, so this web page may be very useful. I
really don´t like that on this web page is all explained by diagrams, and
sincerely I prefer that things like that must be explained using theory.
YouTube,. (2014). EXP 1. Explosive
Polymerization of p Nitro Aniline. Retrieved 17 November 2014, from
https://www.youtube.com/watch?v=h4pNXAtPJp8
On this web
page we have the video of a explosion using nitroaniline. We decided to do this
experiment because of this video. It is a very good video, and we thought that
we can do it. By watching the video we knew how to do the experiment. What we
really dislike about the video, is that it is a simple video, no more, and for
doing this experiment we need many different data and on the video did not
appear.
Poshkus, A., & Parker, J. (1970). Studies
on nitroaniline–sulfuric acid compositions: Aphrogenic pyrostats. Journal Of
Applied Polymer Science, 14(8), 2049-2064. doi:10.1002/app.1970.070140813
Probably
this is one of our most useful web page, because on this web page we found
mostly all the important information in relation with P-nitroaniline and sulfuric
compositions, so here we found all the dangerous information about the gases,
and the toxic repercussion on our organism. By sing this web page we learned
how to be prepared to face the experiment. Really this web page is mostly
perfect, because by the use of some diagrams and theory, it explained
everything very good to us.
Poshkus, A. and Parker, J. (1970). Studies on
nitroaniline–sulfuric acid compositions: Aphrogenic pyrostats. Journal of
Applied Polymer Science, 14(8), pp.2049-2064.
On this web
page is very well explained how to do the experiment, because here, there are
all the steps, one behind the other, without doing nothing wrongly. Also on
this web page says that the gases produced by the explosion are unknown. Even
people who works in the NASA do not know how dangerous those gases because they
don´t know what gases are produced. W really think that this web page is a very
good source, because we have the experiment explained in detail
Wikihow.com,. (2014). Volume of a Cylinder Cheat Sheet - wikiHow. Retrieved 17 November 2014, from http://www.wikihow.com/Sample/Volume-of-a-Cylinder-Diagram
YouTube,. (2014). EXP 1. Explosive Polymerization of p Nitro Aniline. Retrieved 17 November 2014, from https://www.youtube.com/watch?v=h4pNXAtPJp8
Poshkus, A., & Parker, J. (1970). Studies on nitroaniline–sulfuric acid compositions: Aphrogenic pyrostats. Journal Of Applied Polymer Science, 14(8), 2049-2064. doi:10.1002/app.1970.070140813
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