The rate of diffusion in an OPEN solution is dependent on several factors including Concentration gradient, Permeability across the membrane, viscosity of the fluid, and temperature.

Question

BlackTom AI · Accepted Answer

The statement mixes factors that influence diffusion with a term that is only relevant when a boundary (such as a membrane) is present.
In diffusion through a freely open solution (no membrane barrier), the rate is governed primarily by Fick's law: flux is proportional to the concentration gradient and the diffusion coefficient. The diffusion coefficient itself is affected by temperature (higher T generally increases D), and by viscosity (higher viscosity lowers D), so temperature and viscosity are indeed influential.
However, the phrase 'permeability across the membrane' introduces a membrane-specific concept. Permeability describes how easily a substance passes through a membrane, not how fast it diffuses in an open, unobstructed solution. Since there is no membrane to permeate in an open solution, permeability across a membrane does not apply and should not determine the diffusion rate in that context.
Thus, while concentration gradient and physical conditions like temperature and viscosity affect diffusion in an open solution, the inclusion of membrane permeability is inappropriate for diffusion in an open solution, making the overall statement inaccurate.
Additionally, if there were a membrane present, permeability would become a relevant factor, and diffusion would still be influenced by gradient, temperature, and viscosity as described by diffusion theory. The discrepancy here lies specifically in applying membrane permeability to a scenario without a membrane.

The rate of diffusion in an OPEN solution is dependent on several factors including Concentration gradient, Permeability across the membrane, viscosity of the fluid, and temperature.判断题

类似问题

A small uncharged molecule moves across a membrane down its concentration gradient. What transport process is most likely involved in the movement of this molecule?

In the process of diffusion, net movement of substances is always from a region

The tendency of molecules to move toward areas of lower concentration is called

Movement of a substance from an area of higher concentration to one where it is less concentrated is known as:

A tiny container is filled with water, and a phospholipid membrane is inserted to separate the container into two equal halves. Twenty molecules are then added to one side of the membrane. If this membrane is permeable to this molecule, after a long time it is likely that

How is diffusion affected by changes to temperature?

In Diffusion & Osmosis lab Why did the dye diffuse faster in hot water?

Chemicals in a solution can move down a concentration gradient. This means the chemical will move from the area of __ concentration to the area of _blank concentration. equal; equal lower; lower higher; lower higher; higher lower; higher

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单