Method of the experiment

    After collecting the materials we will follow the next procedure:

• 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.