At 25 ^$\circ$ C, the Standard Enthalpy of Formation of Anhydrous Sodium Carbonate

question 52

Multiple Choice

At 25 ^$\circ$ C, the standard enthalpy of formation of anhydrous sodium carbonate is -1130.9 kJ/mol, whereas the standard enthalpy of formation of sodium carbonate monohydrate is -1430.1 kJ/mol. Determine $\Delta$ H ^$\circ$ at 25 ^$\circ$ C for the reaction Na₂CO₃(s) + H₂O(l) $\rarr$ Na₂CO₃·H₂O(s) .(Given: $\Delta$ H ^$\circ$ _f[H₂O(l) ] = -285.8 kJ/mol)

• A) -585.0 kJ/mol
• B) -156.3 kJ/mol
• C) -299.2 kJ/mol
• D) -13.4 kJ/mol
• E) -285.8 kJ/mol

---

Definitions:

Ethical Policies

Guidelines and principles set by an organization to conduct its business in a manner that is honest, fair, and respectful to all stakeholders.

Stakeholders

Individuals or groups with an interest or concern in the success and operations of a business, including employees, customers, investors, and the broader community.

Socially Responsible

Business practices that are ethically grounded, aim to support the community, and consider the impacts on the environment and society at large.

Technology Company

refers to businesses that focus on the development, production, and distribution of technology products and services, including software, hardware, and digital platforms.