this question is from edexcel chemistry unit 4 june ial 2017 MCQ Q-10

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riamu
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https://imgur.com/dBXQees
the correct answer is B but i dont get it why ?
since the hydratration enthalpy will always be negative and lattice enthalpy must be positive and smaller so delta solution is negative and thus the ionic compound could dissolve so whats wrong with option A?
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charco
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(Original post by riamu)
https://imgur.com/dBXQees
the correct answer is B but i dont get it why ?
since the hydratration enthalpy will always be negative and lattice enthalpy must be positive and smaller so delta solution is negative and thus the ionic compound could dissolve so whats wrong with option A?
This question depends upon your specifications definition of lattice enthalpy.
It could be:
Lattice dissociation enthalpy (positive)
Lattice formation enthalpy (negative)
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