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If 491kJMol-1 Is Released in the Reaction Na+(g)+Cl-(g) →\rarr Na+Cl-(g), What Is the Energy Change for the Reaction Na(g)

Question 40

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If 491kJ.mol-1 is released in the reaction Na+(g)+Cl-(g) →\rarr Na+Cl-(g), what is the energy change for the reaction Na(g)+ Cl(g) →\rarr Na+Cl-(g)? (Hint: See the discussion in the text and apply Hess's Law.)

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