OWhat Is the Change in Free Energy at 298 K

question 40

Multiple Choice

oWhat is the change in free energy at 298 K when 70.0 mL of 0.704 M calcium chloride is combined with 47.9 mL of 0.859 M sodium carbonate? (R = 8.31 J/(K ∙ mol) )
Ca²⁺(aq) + CO₃^2-(aq) → CaCO₃(s)

• A)42.6 kJ
• B)-2.21 × 10³ kJ
• C)46.1 kJ
• D)47.4 kJ
• E)2.56 × 10³ kJ

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