Use the Information Provided to Determine $\Delta$ R H° for the Following Reaction

question 3

Multiple Choice

Use the information provided to determine $\Delta$ r H° for the following reaction: $$\begin{array} { l l l l } { \mathrm { D } _ { \mathrm { f } } H ^ { \circ } \left( \mathrm { kJ } \mathrm { mol } ^ { - 1 } \right) } & \mathrm { CH } _ { 4 } ( g ) + 3 \mathrm { Cl } _ { 2 } ( g ) \rightarrow \mathrm { CHCl } _ { 3 } ( l ) + 3 \mathrm { HCl } ( g ) & \Delta _ { \mathrm { r } } H ^ { \circ } = ? \\\mathrm { CH } _ { 4 } ( g ) & - 75 \\\mathrm { CHCl } _ { 3 } ( l ) - 134 & & \\\mathrm { HCl } ( g ) - 92 &\end{array}$$

---

Definitions:

Hilgard

Ernest R. Hilgard was a prominent psychologist known for his research on hypnosis and pain control.

Psychoactive Drugs

Substances that affect the mind, mood, or behavior by altering the chemical processes in the brain.

Insomnia

A sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing restorative sleep, leading to daytime impairment.

Barbiturate

A class of drugs derived from barbituric acid, acting as a central nervous system depressant, used for sedation, anesthesia, or to treat seizures.