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When 0560 G of Na(s) Reacts with Excess F2(g) to Form

Question 96

Multiple Choice

When 0.560 g of Na(s) reacts with excess F2(g) to form NaF(s) , 13.8 kJ of heat is evolved at standard-state conditions. What is the standard enthalpy of formation (ΔH°f) of NaF(s) ?


A) 567 kJ/mol
B) -24.8 kJ/mol
C) -7.8 kJ/mol
D) 24.8 kJ/mol
E) -567 kJ/mol

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