What’s the amount of lattice energy of NaCl?(a) 788 KJ mol^-1(b) 688 KJ mol^-1(c) 588 KJ mol^-1(d) 488 KJ mol^-1The question was asked by my college director while I was bunking the class.I need to ask this question from Ionic or Electrovalent Bond in division Chemical Bonding and Molecular Structure of Chemistry – Class 11

What’s the amount of lattice energy of NaCl?(a) 788 KJ mol^-1(b) 688

1.	What’s the amount of lattice energy of NaCl?(a) 788 KJ mol^-1(b) 688 KJ mol^-1(c) 588 KJ mol^-1(d) 488 KJ mol^-1The question was asked by my college director while I was bunking the class.I need to ask this question from Ionic or Electrovalent Bond in division Chemical Bonding and Molecular Structure of Chemistry – Class 11
Answer» Correct answer is (a) 788 KJ mol^-1 To ELABORATE: NaCl’s lattice enthalpy is given by 788 KJ mol^-1. To disassociate one mole of NaCl into one mole of Na^+ and one mole of Cl^-1 into an infinite distance, we need 788 KJ mol^-1 of ENERGY. When the ions are combined to FORM an ionic compound that is a crystalline SOLID, a certain AMOUNT of energy is released and this is known as the lattice energy.

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