Analysis of information sources in references of the Wikipedia article "Standard state" in English language version.
Although white phosphorus is not the thermodynamically stable allotrope, the red and black forms are difficult to prepare in pure form, which makes them less suitable for quantitative thermodynamic measurements.
We will include a superscripted "o" in the enthalpy change symbol to designate standard state.
Although white phosphorus is not the thermodynamically stable allotrope, the red and black forms are difficult to prepare in pure form, which makes them less suitable for quantitative thermodynamic measurements.