Partial Pressure in Gibb's Phase Rule Formulas

Partial Pressure is the notional pressure of that constituent gas if it alone occupied the entire volume of the original mixture at the same temperature. And is denoted by p_partial. Partial Pressure is usually measured using the Pascal for Pressure. Note that the value of Partial Pressure is always negative.

Gibb's Phase Rule formulas that make use of Partial Pressure

fxMole Fraction of A in Liquid in Raoult's LawGo

fxMolar humidity given partial pressureGo

FAQ

What is the Partial Pressure?

Partial Pressure is the notional pressure of that constituent gas if it alone occupied the entire volume of the original mixture at the same temperature. Partial Pressure is usually measured using the Pascal for Pressure. Note that the value of Partial Pressure is always negative.

Can the Partial Pressure be negative?

Yes, the Partial Pressure, measured in Pressure can be negative.

What unit is used to measure Partial Pressure?

Partial Pressure is usually measured using the Pascal[Pa] for Pressure. Kilopascal[Pa], Bar[Pa], Pound Per Square Inch[Pa] are the few other units in which Partial Pressure can be measured.

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