Using the Thermodynamic Data Provided Below, Determine the Temperature in

question 128

Multiple Choice

Using the thermodynamic data provided below, determine the temperature in ^$\circ$ C at which the decomposition of solid calcium carbonate to form solid calcium oxide and oxygen becomes spontaneous. $\begin{array}{|l|c|c|}\hline & \Delta \mathrm{H}_{\mathrm{f}}^{\circ}(\mathrm{kJ} / \mathrm{mol}) & \mathrm{S}^{\circ}(\mathrm{J} / \mathrm{K} \cdot \mathrm{~mol}) \\\hline \mathrm{CO}_{2}(\mathrm{g}) & -393.5 & 213.6 \\\hline \mathrm{CaO}(\mathrm{s}) & -635.6 & 39.8 \\\hline \mathrm{CaCO}_{3}(\mathrm{s}) & -1206.9 & 92.9 \\\hline\end{array}$

• A) 834.6^\(\circ\)C
• B) 814.6^\(\circ\)C
• C) 794.6^\(\circ\)C
• D) 774.6^\(\circ\)C
• E) None of the above

---

Definitions:

Hierarchical Network Model

A cognitive psychology theory proposing that mental categories are organized in a hierarchical manner, where broader categories encompass more specific ones.

Collins

Commonly refers to Allan Collins, a cognitive scientist known for his work in educational technology and the development of learning theories, including the Cognitive Apprenticeship model.

ACT

ACT stands for Acceptance and Commitment Therapy, a form of psychotherapy that encourages individuals to embrace their thoughts and feelings rather than fighting or feeling guilty for them.

Semantic Memory

A memory system proposed by Tulving that is thought to hold memories of general knowledge.