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Standard XII

Chemistry

Units and Dimensions

The number of...

Question

The number of particles crossing per unit area perpendicular to Z axis per unit time is given by N=-D(N2-N1)/(Z2-Z1),where N2 & N1 are the number of particles per unit volume at Z2 & Z1 respectively.what is the dimensional formula for D?

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The number of particles crossing the unit area perpendicular to the x –axis per unit time, is given by:

$N = - D (\frac{n_{2} - n_{1}}{x_{2} - x_{1}})$

Where

$n_{1}$ and $n_{2}$

are the numbers of particles per unit volume for the values of x meant to be $x_{1}$ and $x_{2}$ respectively. What is the dimensional formula for the diffusion constant D?

Q. The number of particles is given by

n = - D \frac{n_{2} - n_{1}}{x_{2} - x_{1}}

crossing a unit area perpendicular to X-axis in unit time, where

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and

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