Ph Diagram
Ph Diagram. The following post gives background information on the refrigeration cycle as shown on the pressure enthalpy diagram. You can show lines of constant vapor quality (blue), temperature (green), density (orange, dashed) and entropy (purple, dashed).
Pourbaix diagram for water, including equilibrium regions for water, oxygen and hydrogen at STP.
The vertical scale is the electrode potential of a hydrogen or non-interacting electrode relative to an SHE electrode, the horizontal scale is the pH of the electrolyte (otherwise non-interacting).
As noted above, these diagrams are essentially phase diagrams that map the conditions of potential and pH (most typically in aqueous solutions) where different redox species are stable. pH diagrams, which are practical and useful for understanding geochemical behavior of elements. You can show grid lines using a checkbox. Figuring out the vapor fraction in a ln P-H diagram.
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