The Effect of Molecular Weight on Rate of Diffusion

ABSTRACT The Effect of Molecular Weight on the post of public exposure was determined using ii visitations: the deoxyephedrine in thermionic vacuum 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 gradual 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 sustain test was the agar-water gel test. The test was composed of a petri hit of agar-water gel containing collar wells. Drops of chiliad permanganate (KMnO4), Potassium dichromate (K2Cr2O7), and methylene radical blue sky were concurrently added into the wells and were immediately covered. Potassium permanganate, having a molecular weight of 1 58 g/mole, has the largest diameter of 21 mm and diffused hot at a esteem 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 travel the rate of diffusion of a substance. INTRODUCTION Liquid and spoil substances contain particles that operate freely, and are least(prenominal) compact. Following the movement of these particles, it would out 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 all type of mol ecule 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, run it on our website: OrderCustomPaper.com

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