NaCl(s)⟶Na+(g)+Cl−(g) The enthalpy of above reaction is known as:
A
Enthalpy of hydration
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B
Lattice enthalpy
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C
Enthalpy of solution
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D
Enthalpy of dissociation
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Solution
The correct option is B Lattice enthalpy NaCl(s)⟶Na+(g)+Cl−(g) The energy required to dissociate one mole of an ionic compound into gaseous ions is defined as lattice enthalpy.