Entropy

[Bola_G_3H]

What effect does the being reversible vs irreversible have on entropy? How would you calculate both?

[Kathy Vu 3L]

Irreversible processes cause a change in entropy, whereas reversible processes have an entropy change of 0.

[stephanieyang_3F]

Kathy can you explain what you mean by that? What kind of example should we refer to understand that concept?

[Maddy_Larson_2J]

If entropy is always increasing, then in a non-spontaneous reaction what part of the reaction relates to the increase in entropy if we are using work to create order?

[Emma Cole 3F]

I understand that with a more massive substance, the higher the entropy. But, how can you distinguish in the level of entropy between a solid, a liquid, and a gas of the same substance?

[stephanieyang_3F]

Usually entropy increases from solid -> liquid -> gas because there's more disorder associated with a gas (molecules are free to move around and are not bounded) compared to that of a solid (molecules are in rigid structures).

[shreya_mantri_3I]

Does anyone know what effect does pressure have on entropy?

[stephanieyang_3F]

A higher pressure would mean that a substance is more constricted to move around. The entropy would therefore be less when the pressure increases.