Determine $\Delta$ H_f ^$\circ$ (HCl(g))from the Following Data $\Delta$ H_f ^$\circ$ (H(g))= +217 $\Delta$ H_f ^$\circ$

question 37

Multiple Choice

Determine $\Delta$ H_f ^$\circ$ (HCl(g) ) from the following data. H-Cl bond enthalpy = +431 kJ.mol^-1
$\Delta$ H_f ^$\circ$ (H(g) ) = +217.9 kJ.mol^-1
$\Delta$ H_f ^$\circ$ (Cl(g) ) = +121.4 kJ.mol^-1

• A)+92 kJ.mol^-1
• B)(-261 kJ.mol^-1 )
• C)(-431 kJ.mol^-1 )
• D)+431 kJ.mol^-1
• E)(-92 kJ.mol^-1 )

---

Definitions:

Freedom of Information Act

A law that allows for the full or partial disclosure of previously unreleased information and documents controlled by the United States government.

Federal Records

Documents created or received by a government agency that are preserved as evidence of the organization, functions, policies, decisions, procedures, operations, or other activities.

Coefficient Alpha

A reliability coefficient that measures the internal consistency of a test or scale; it is commonly used in psychometrics.

Reliability

The reliability of an evaluation tool in generating steady and unchanging outcomes over various periods.