High School

For the reaction:

\[ \text{NH}_4\text{Cl(aq)} \rightarrow \text{NH}_3\text{(g)} + \text{HCl(aq)} \]

Given:
\[ \Delta G^\circ = 59.1 \, \text{kJ} \]
\[ \Delta H^\circ = 86.4 \, \text{kJ} \]
Temperature: 345 K
Pressure: 1 atm

1. This reaction is (reactant, product) ___ favored under standard conditions at 345 K.

2. The entropy change for the reaction of 1.72 moles of \(\text{NH}_4\text{Cl(aq)}\) at this temperature would be ___ J/K.

Answer :

Final answer:

The reaction NH₄Cl(aq) → NH₃(g) + HCl(aq) is favored under standard conditions at 345 K. The entropy change for the reaction of 1.72 moles of NH₄Cl(aq) at this temperature would be 0.079 kJ/K.

Explanation:

To determine whether the reaction NH₄Cl(aq) → NH₃(g) + HCl(aq) is favored under standard conditions at 345 K, we can use the Gibbs free energy change (△G°) and the equation △G° = △H° - T△S°.

Given that △G° = 59.1 kJ and △H° = 86.4 kJ, we can rearrange the equation to solve for △S°:

△S° = (△H° - △G°) / T

Substituting the values, we get:

△S° = (86.4 kJ - 59.1 kJ) / 345 K

△S° = 0.079 kJ/K

Therefore, the entropy change for the reaction of 1.72 moles of NH₄Cl(aq) at 345 K would be 0.079 kJ/K.

Learn more about favorability of a reaction and entropy change here:

https://brainly.com/question/31476138

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Final answer:

The reaction NH₄Cl(aq) → NH₃(g) + HCl(aq) is favored under standard conditions at 345 K. The entropy change for the reaction of 1.72 moles of NH₄Cl(aq) at this temperature would be 0.079 kJ/K.

Explanation:

To determine whether the reaction NH₄Cl(aq) → NH₃(g) + HCl(aq) is favored under standard conditions at 345 K, we can use the Gibbs free energy change (△G°) and the equation △G° = △H° - T△S°.

Given that △G° = 59.1 kJ and △H° = 86.4 kJ, we can rearrange the equation to solve for △S°:

△S° = (△H° - △G°) / T

Substituting the values, we get:

△S° = (86.4 kJ - 59.1 kJ) / 345 K

△S° = 0.079 kJ/K

Therefore, the entropy change for the reaction of 1.72 moles of NH₄Cl(aq) at 345 K would be 0.079 kJ/K.

Learn more about favorability of a reaction and entropy change here:

https://brainly.com/question/31476138

#SPJ14

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