Calculate the lattice energy of kcl(s) given the following data using the born-haber cycle: δhsublimation k = 79.2 kj/mol ie1 k = 418.7 kj/mol bond energycl–cl = 242.8 kj/mol eacl = 348 kj/mol δhkcl(s) = –435.7 kj/mol

Explanation:

  The following equation relates to Born-Haber cycle

Where

is enthalpy of formation

S is enthalpy of sublimation

B is bond enthalpy

is ionisation enthalpy of metal

is electron affinity of non metal atom

is lattice energy

Substituting the given values we have

-435.7 = 79.2 + 1/2 x 242.8 + 418.7 - 348 +U_L

= - 707 KJ / mol

the answer is d. 74.02

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.