Calculate Δ S° for the Following Reaction: ​

question 20

Multiple Choice

Calculate Δ S° for the following reaction: ​
SO₃( g ) + CaO( s ) → CaSO₄( s ) .
​
Δ S° in J\moles K for CaO( s ) is 40, for SO ₃ ( g ) is 256.6, and for CaSO ₄ ( s ) is 107.

• A)+404 J\K
• B)− 190 J\K
• C)− 323 J\K
• D)+189 J\K

---

Definitions:

Unilateral Contract

A type of contract in which only one party makes a promise to perform in exchange for an act by the other party.

Promissory Estoppel

A legal principle that prevents a party from retracting a promise when the other party has reasonably relied on that promise to their detriment.

Consideration

Something of value that is promised, given, or received in a contract to make it legally binding.

Moral Consideration

Ethical values or principles that influence an individual’s decisions and actions, often guiding behavior in social and professional contexts.