When lithium iodide (LiI) is dissolved in water, the solution ...

Question

When lithium iodide (LiI) is dissolved in water, the solution becomes hotter. d. Why does the solution form? What drives the process?

Accepted Answer

insert step 1\u003e Understand that when lithium iodide (LiI) dissolves in water, it dissociates into lithium ions (Li^+) and iodide ions (I^-). This process involves breaking the ionic bonds in the solid and forming new interactions with water molecules.. insert step 2\u003e Recognize that the dissolution process involves two main energy changes: the lattice energy of LiI and the hydration energy of the ions. Lattice energy is the energy required to separate the ions in the solid, while hydration energy is the energy released when ions interact with water molecules.. insert step 3\u003e Note that the solution becomes hotter, indicating that the dissolution process is exothermic. This means that the energy released during hydration is greater than the energy required to break the lattice.. insert step 4\u003e Consider the concept of entropy, which is a measure of disorder. When LiI dissolves, the system's entropy increases because the ions are more dispersed in solution than in the solid state.. insert step 5\u003e Conclude that the solution forms because the overall process is driven by both the exothermic nature of the dissolution (enthalpy change) and the increase in entropy, making the process thermodynamically favorable.

When lithium iodide (LiI) is dissolved in water, the solution becomes hotter. d. Why does the solution form? What drives the process?

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Dissolution Process

Exothermic Reactions

Thermodynamics of Solutions