How Much Energy Is Required to Decompose 765 G of PCl₃

question 51

Multiple Choice

How much energy is required to decompose 765 g of PCl₃ according to the reaction below? The molar mass of PCl₃ is 137.32 g and may be useful. 4PCl₃(g) → P₄(s) + 6Cl₂(g) H° = +1207 kJ

• A) 2.31 × 10³ kJ
• B) 4.33 × 103 kJ
• C) 6.72 × 10³ kJ
• D) 1.68 × 10³ kJ
• E) 5.95 × 10³ kJ

---

Definitions:

Economics

The social science that studies how individuals, governments, firms, and nations make choices on allocating scarce resources to satisfy their unlimited wants.

Clarify Concepts

The process of making ideas, subjects, or situations clearer and more comprehensible.

Authenticity

The quality of being genuine or true to one's own personality, spirit, or character, often in opposition to conforming to artificial standards or expectations.

Online Entity

A presence or identity established on the internet, which can be either an individual, a business, or an organization.