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AP Chemistry Flashcards: Free Energy Of Dissolution

Study Free Energy Of Dissolution in AP Chemistry with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Calculate △G\triangle G given △H=10 kJ/mol\triangle H = 10 \text{ kJ/mol}, T=298 KT = 298 \text{ K}, △S=50 J/mol\cdotpK\triangle S = 50 \text{ J/mol·K}.

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ANSWER

△G=−4.9 kJ/mol\triangle G = -4.9 \text{ kJ/mol}. △G=10000−298(50)=10000−14900=−4900\triangle G = 10000 - 298(50) = 10000 - 14900 = -4900 J/mol.

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AP Chemistry: Thermodynamics and Electrochemistry

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This deck focuses on Free Energy Of Dissolution, giving you a quick way to review the definitions, rules, and examples that matter most for AP Chemistry.

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Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 35Practice questions for this set
A student dissolves solid NH4NO3\text{NH}_4\text{NO}_3 in water at 25∘C25^\circ\text{C}. The solution becomes noticeably colder (so ΔHsoln>0\Delta H_{\text{soln}} > 0), and the ions disperse throughout the solvent (so ΔSsoln>0\Delta S_{\text{soln}} > 0). Under these conditions, is the dissolution thermodynamically favored?
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