Calculate the enthalpy change for the dissolution of (NH4)2SO4(s) using the enthalpy of formation data provided below:   (remember to write the balanced equation for the dissolution reaction including state symbols). Explain how the value obtained here might be different from the value obtained using calorimetry. Compound Enthalpies of formation (kJmol-1) (NH4)2SO4 (s) -1380.9 (NH4)+ (aq) -143.5 (SO4)2- (aq) -1009.0

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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.