What is the triangle cap h sub sol for KF rightarrow cap k raised to the plus plus cap f raised to the negative power power ? The lattice energy is negative 784 kJ/mol , the enthalpy of hydration for cap k raised to the plus power is negative 336 kJ/mol , and the enthalpy of hydration for cap f raised to the negative power is negative 431 kJ/mol Use triangle cap h sub sol is equal to negative triangle cap h sub lat plus triangle cap h sub hydr
Add the hydration enthalpies: −336 kJ/mol + (−431 kJ/mol) = −767 kJ/mol. Then use ΔHsol = −ΔHlat + ΔHhydr: −(−784) + (−767) = 784 − 767 = 17 kJ/mol. The correct choice is 17 kJ/mol.
AI-written and checked against the verified answer.