Question

1. The lattice enthalpy of Kl will be, if the enthalpy of
(I) H°(KI) = -78.0 kcal/mol

(II) Ionisation energy of K to K+ is 4.0 eV

(III) Dissociation energy of l2 , to l is 28.0 kcal/mol

(IV) Sublimation energy of K is 20.0 kcal/mol

(V) Electron gain enthalpy for I to I- is -70.0 kcal/mol

(VI) Sublimation energy of l2 , is 14.0 kcal/mol
(1 eV = 23.0 kcal/mol)

Options:-

(1) +14.1 kcal/mol
(2) -14.1 kcal/mol
(3) -141 kcal/mol
(4) +141 kcal/mol
​

Answer 1

Answer:

+141 kcal/mol

Explanation:

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