Question

Define standard entropy. Also write the SI unit of entropy.​

Answer 1

Answer:

In chemistry, the standard molar entropy is the entropy content of one mole of pure substance under a standard state. The standard molar entropy is usually given the symbol S°, and has units of joules per mole kelvin. Unlike standard enthalpies of formation, the value of S° is absolute.

The SI unit for Entropy (S) is Joules per Kelvin (J/K). A more positive value of entropy means a reaction is more likely to happen spontaneously.