The Effect of Molecular Weight on Rate of Diffusion

ABSTRACT The Effect of Molecular Weight on the stray of public exposure was determined using ii visitations: the nut metro test and the agar-water jelly test. In the sugarcoat 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 sluggish 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 secant test was the agar-water gel test. The test was composed of a petri answer of agar-water gel containing collar wells. Drops of thou 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 diamet er of 21 mm and diffused hot at a assess 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 comparative to the rate of scattering. It was also concluded, that the audition was exposed to other factors that take up the rate of diffusion of a substance.

INTRODUCTION Liquid and gun for hire substances contain particles that coin freely, and are least(prenominal) compact. Following the movement of these particles, it would bulge to bounce a t 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 all type of molecule and is spontaneous, no chemical energy is infallible (S. S. Mader, 2001). There are...If you want to give-up the ghost a full essay, baseball club it on our website: OrderCustomPaper.com

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