Determine $\Delta$ S ^°rxn for Zn(s) + 2HCl(aq) $\leftrightarrow$ ZnCl₂(aq) + H₂(g) Given the Following Information

question 45

Multiple Choice

Determine $\Delta$ S ^°rxn for Zn(s) + 2HCl(aq) $\leftrightarrow$ ZnCl₂(aq) + H₂(g) given the following information: $\begin{array}{l}\text { Substance } \quad S^{\circ}(\mathrm{J} / \mathbf{m o l} \text { - }\\\begin{array}{lc} & \text { K) } \\\mathrm{Zn}(s) & 60.9 \\\mathrm{HCl}(a q) & 56.5 \\\mathrm{H}_{2}(g) & 130.58 \\\mathrm{Zn}^{2+}(a q) & -106.5 \\\mathrm{Cl}^{-}(a q) & 55.10\end{array}\end{array}$

• A) -39.6 J/K
• B) 0 J/K
• C) +39.6 J/K
• D) -38.2 J/K
• E) +38.2 J/K

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Definitions:

Negative Reinforcement

A behavioral concept where the removal of an undesirable or unpleasant stimulus following a behavior increases the likelihood of that behavior being repeated in the future.

Punishers

Stimuli that decrease the likelihood of a behavior being repeated, used in the context of behavioral psychology.

Teenage Daughter

A girl going through the phase of adolescence, typically aged between 13 and 19 years, experiencing physical, psychological, and social changes.

Variable-ratio Schedule

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses, making it very resistant to extinction.