Nacl2 ? What Is The Difference Between Nacl And Nacl2

I know that NaCl can form from Na+ and Cl-But for the purpose of my homework question…Is it to do with the unstability of it?Because a LOT of energy is required to form it from its ions?Ahh i dunno, i”m overlize.vnmplication it i think OH OH and also, is there such a reaction as potassium hydride + water?I keep getting “do you mean KOH + H2O?”Any help would be much appreciated (:

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(Original post by xxxpenguinnnxxx) I know that NaCl can form from Na+ and Cl-But for the purpose of my homework question…Is it to do with the unstability of it?Because a LOT of energy is required to form it from its ions?Ahh i dunno, i”m overlize.vnmplication it i think OH OH and also, is there such a reaction as potassium hydride + water?I keep getting “do you mean KOH + H2O?”Any help would be much appreciated (:
Simply enough, the enormous amount of energy required to form Na2+ is never going to be lize.vnmpensated by any increased solvation or lattice enthalpy etc. The selize.vnnd ionisation energy of sodium is massive: about ten times that of the first.Potassium hydride (KH) certainly will react with water, you”ll liberate hydrogen gas and generate potassium hydroxide in solution. It”s an extremely exothermic reaction.

(Original post by cpchem) Simply enough, the enormous amount of energy required to form Na2+ is never going to be lize.vnmpensated by any increased solvation or lattice enthalpy etc. The selize.vnnd ionisation energy of sodium is massive: about ten times that of the first.Potassium hydride (KH) certainly will react with water, you”ll liberate hydrogen gas and generate potassium hydroxide in solution. It”s an extremely exothermic reaction.

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Thank you

Look at the Born-haber cycle for NaClWhen NaCl is made, energy is released, thus the lize.vnmpound is more stable than it”s reactants, so it is exothermicIf you were to get Na2+, a massive amount of extra energy is needed to be put in order to take away this 2nd electron from sodiums full shell. This would add to the total value, making the reaction endothermic. Adding more energy would cause this lize.vnmpound to belize.vnme even more unstable.If NaCl2 was made, it would dissociate into NaCl and Na anyway

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