Question

What is standard state of a substance?​

Answer 1

Explanation:

The standard state for liquids and solids is simply the state of the pure substance subjected to a total pressure of 105 Pa. For most elements, the reference point of ΔHf⦵ = 0 is defined for the most stable allotrope of the element, such as graphite in the case of carbon, and the β-phase (white tin) in the case of tin

Answer 2

The standard state for liquids and solids is simply the state of the pure substance subjected to a total pressure of 105 Pa.