Use the Information Provided to Determine ΔH°_rxn for the Following

question 112

Multiple Choice

Use the information provided to determine ΔH°_rxn for the following reaction: ΔH°_f (kJ/mol) CH₄(g) + 4 Cl₂(g) → CCl₄(g) + 4 HCl(g) ΔH°_rxn = ?
CH₄(g) -75
CCl₄(g) -96
HCl(g) -92

• A) -389 kJ
• B) -113 kJ
• C) +113 kJ
• D) -71 kJ
• E) +79 kJ

---

Definitions:

Trachea

In insects, air tube located between the spiracles and the tracheoles. In tetrapod vertebrates, air tube (windpipe) that runs between the larynx and the bronchi.

Cephalothorax

A body region found in certain arthropods, including spiders and crustaceans, that combines the head and the thorax into one unit.

Fangs

Long, pointed teeth typically found in venomous snakes used to inject venom, or in some mammals for grasping and tearing.

Deuterostome

Group of coelomate animals in which the second embryonic opening is associated with the mouth; the first embryonic opening, the blastopore, is associated with the anus.