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Diffusion Coefficients

Reference data and engineering information about diffusion coefficients for chemistry applications.

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Overview

Engineering reference data for Diffusion Coefficients in chemistry.

Key Formulas

Ideal Gas Law

PV=nRTPV = nRT

Pressure × Volume = moles × gas constant × temperature.

Molarity

M=nVM = \frac{n}{V}

Moles of solute per liter of solution.

pH

pH=−log⁡10[H+]pH = -\log_{10}[H^+]

Measure of acidity.

Variables

Symbol Description Unit
PP Pressure Pa
VV Volume m³
nn Moles mol
RR Gas constant 8.314 J/(mol·K)

Diffusion Coefficients of Gases in Water

The diffusion coefficient of a gas dissolved in liquid water is temperature-dependent and varies significantly between different gases. Note that gas–liquid diffusion coefficients are difficult to measure, and values from different sources and measurement methods may show some uncertainty.

Interactive Charts

References