When lithium iodide (LiI) is dissolved in water, the solution becomes hotter. b. What can you conclude about the relative magnitudes of the lattice energy of lithium iodide and its heat of hydration?

Video transcript

Hello everyone today. We are being given the following scenario and asked to assess it. So we have dissolving in a cl and water increases the temperature of the solution, which has a greater magnitude relative between its lattice energy and its heat of hydration. Well, it's important to note that the infill piece, so Delta H. Is going to be equal to the sum of the heat of hydration plus the lattice energy which we're gonna prevail L. E. And so we have that the heat of hydration is going to be negative and the lattice energy is going to be positive since we did know an increase in the temperature of the solution, this is directly correlated with the entropy of the solution. Therefore we can say that this entropy here is going to be negative or xo thermic, which means it releases heat a negative sum overall means that the heat of hydration is going to be greater in magnitude than the lattice energy. So we can say that the heat of hydration, H H is going to be greater than the Matisse energy in magnitude. I hope this helped. And until next time