The Effect of Molecular Weight on the Rate of public exposure was determined using two visitations: the glass tube test and the agar-water jelly test. In the glass tube test, two balls of like of the same size were soaked in two varied ways, hydrochloric acid (HCl) and ammonium hydroxide (NH4OH) and were inserted into the two ends of the tube. The substance with the ignitor molecular angle (NH4OH, MW= 35.05 grams/mole) diffused slower resulting a validation of white ring around the glass close to the substance with the lighter molecular weight (HCl, MW= 36.458 grams/mole). The second test was the agar-water gel test. The test was composed of a petri dish of agar-water gel containing collar wells. Drops of Potassium permanganate (KMnO4), Potassium dichromate (K2Cr2O7), and Methylene blue sky were concurrently added into the wells and were immediately covered. Potassium permanganate, having a molecular weight of 158 g/mole, has the largest diameter of 21 mm and diffused hot at a rate of 0.365 mm/min as compared to potassium dichromate (d= 18mm, r = 0.332 mm/min) and methylene blue (d = 9 mm, r = 0.033 mm/min). Hence, the molecular weight of a substance is inversely proportional to the rate of scattering. It was also concluded, that the audition was exposed to other factors that affect the rate of diffusion of a substance.
INTRODUCTION
Liquid and gas substances contain particles that move freely, and are least(prenominal) compact. Following the movement of these particles, it would appear to bounce at ergodic between its collisions with other atoms or molecules. This random movement is called diffusion (Patlack, J. and Watters, C. 1999). Diffusion is the tendency of materials to move from area of higher concentration to areas of lower concentration (Postlethwait, 1995). It is a physical process that john be observed with any type of molecule and is spontaneous, no chemical energy is required (S. S. Mader, 2001).
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