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JEE Main20257 Apr 2025Evening ShiftChemistryThermodynamics (C)Actual

The hydration energies of K ⁺ and Cl ⁻ are -x and -y kJ / mol respectively. If lattice energy of KCl is -z kJ / mol , then the heat of solution of KCl is :

Options

  1. A+x-y-z
  2. Bx+y+z
  3. Cz-(x+y)
  4. D- z -( x + y )

Correct answer

C. z-(x+y)

Step-by-step solution

aligned H _ Sol ^ n . & = L E +( H E )_ K _ ( g ) ⁺ +( HE )_ Cl _ ( g ) ⁻¹ & = Z - x - y & = z -( x + y ) aligned

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