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NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice

Sodium chloride is soluble in water but not in benzene because

Options

  1. AΔ H Solvation < Δ H Lattice energy in water and Δ H Solvation > Δ H Lattice energy in benzene
  2. BΔ H Solvation > Δ H Lattice energy in water and Δ H Solvation < Δ H Lattice energy in benzene
  3. CΔ H Solvation = Δ H Lattice energy in water and Δ H Solvation < Δ H Lattice energy in benzene
  4. DΔ H Solvation < Δ H Lattice energy in water and Δ H Solvation = Δ H Lattice energy in benzene

Correct answer

B. Δ H Solvation > Δ H Lattice energy in water and Δ H Solvation < Δ H Lattice energy in benzene

Step-by-step solution

Hydration energy resolve during dissolution in the water while lattice energy gives the energy to break the crystal so For a compound to be soluble, the solvation energy must be greater than the lattice energy. Since, NaCl is soluble in water but insoluble in benzene. Δ H Solvation > Δ H Lattice energy in water and Δ H Solvation < Δ H Lattice energy in benzene

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