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Why is the formation of solid sodium chloride from solid
Chapter 9, Problem 10E(choose chapter or problem)
Problem 10E
Why is the formation of solid sodium chloride from solid sodium and gaseous chlorine exothermic, even though it takes more energy to form the Na+ ion than the amount of energy released upon formation of Cl- ?
Questions & Answers
QUESTION:
Problem 10E
Why is the formation of solid sodium chloride from solid sodium and gaseous chlorine exothermic, even though it takes more energy to form the Na+ ion than the amount of energy released upon formation of Cl- ?
ANSWER:
Solution 10E Step 1 of 1 We have to spend a certain amount of energy (called energy of ionization) to make a metal (e.g. Sodium) lose its electron, When an electron join a non metal, the non metal releases a certain amount of energy (called electronic affinity) Thus we have to spend energy to make the Na lose