Which of the Following Has a Standard Enthalpy of Formation

question 141

Multiple Choice

Which of the following has a standard enthalpy of formation value (ΔH°_f) of zero at 298 K?

• A) H₂O(g)
• B) O(g)
• C) H₂O(l)
• D) O₂(g)
• E) O₃(g)

---

Definitions:

Stored-value Money

Refers to monetary value represented in a digital format, often used in prepaid cards and digital wallets, enabling cashless transactions.

Smart

Having or showing a quick-witted intelligence or incorporating technology that allows for operation in a more efficient or sophisticated manner.

Purchasing

Purchasing involves the process of acquiring goods or services in exchange for money or its equivalent.

Electronic Exchanges

Online platforms where buyers and sellers can meet to trade goods, services, or securities.