Diffusion

In: Science

Submitted By nndo
Words 297
Pages 2
Description and Observation
Of Methylene Blue and Potassium Permanganate

Abstract
The glass tube and the agar-water gel test. In the glass tube test, two cotton balls were soaked in two ends of the glass tube. Ammonia (NH3), with the lighter molecular weight value diffused at a faster rate. Thus, resulting in the formation of a white smoke in the glass tube moving closer to the side of the heavier substance Hydrochloric Acid (HCl). The agar-water gel set-up consisted of a agar-water gel in a petri dish. Potassium Permanganate (KmnO4), Methylene Blue (C16H18N3SCl) had a drop in each well. Methylene Blue, having the heaviest weight, diffused slowly. Therefore, the heavier the molecular weight, the slower the rate of diffusion.

Introduction
Many interesting biological facts but usually, when modifications or experiments are tried, the investigator has some reason for doing so. A substance in the gaseous or liquid state consists of molecules or atoms that are independent, rapid, and random in motion. These molecules frequently collide with each other and with the sides of the container. In a period of time, this movement results in a uniform distribution of the molecules throughout the system. This process is called diffusion.
Diffusion is a process of equalization which involves movement of molecules from an area of high concentration to an area of low concentration.

Materials and Methods

Results Methylene Blue(MW: 320g/mole) | Potassium Permanganate(MW : 158g/mole) | Time(min) | Distance (mm) | Rate(mm/min) | Time(min) | Distance (mm) | Rate (mm/min) | 0 | 15 | 0 | 0 | 24 | 0 | 15 | 16 | 1.06 | 15 | 32.67 | 2.178 | 30 | 16.3 | 0.5 | 30 | 36.67 | 1.23 | 45 | 17 | 0.38 | 45 | 40.3 | 0.89 | 60 | 16.67 | 0.28 | 60 | 43.67 | 0.72…...

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