How it is calculated the standard Entropy for each substance? if it is just delta enthalpy(or heat transfered by the surroundings) divided temperature, every substance would have the same entropy for any given temperature.
Great question! The standard entropy of a substance is a property based on several factors, including the number of accessible "microstates," its molecular structure, and energy levels. It is determined experimentally and statistically, rather than through a simple formula involving enthalpy divided by temperature. That formula is used to calculate changes in entropy for processes, using the standard entropy values rather than determining them. Each substance has a unique standard entropy value at a given temperature and pressure due to differences in molecular complexity, structure, and interactions. Don't worry - you will never be asked about any of that at this level however :)
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How it is calculated the standard Entropy for each substance? if it is just delta enthalpy(or heat transfered by the surroundings) divided temperature, every substance would have the same entropy for any given temperature.
Great question! The standard entropy of a substance is a property based on several factors, including the number of accessible "microstates," its molecular structure, and energy levels. It is determined experimentally and statistically, rather than through a simple formula involving enthalpy divided by temperature. That formula is used to calculate changes in entropy for processes, using the standard entropy values rather than determining them. Each substance has a unique standard entropy value at a given temperature and pressure due to differences in molecular complexity, structure, and interactions.
Don't worry - you will never be asked about any of that at this level however :)