Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions.The ionization energy of sodium is 495 kJ mol−1:
none
495 kJ
1485 kJ
148.5 kJ
A
1485 kJ
B
495 kJ
C
148.5 kJ
D
none
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Solution
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Energy needed to convert 1 mole of sodium (g) to sodium ions = 495 kJ ∴ Energy needed to convert 3 mole of Na (g) to Na+ ions = 495 × 3 = 1485 kJ
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