When ammonium chloride (NH4Cl) is dissolved in water, the solution becomes colder.a. Is the dissolution of ammonium chloride endothermic or exothermic?b. What can you conclude about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration?c. Sketch a qualitative energy diagram similar to Figure 13.7 for the dissolution of NH4Cl.d. Why does the solution form? What drives the process?

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.