A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that occurs when a solid dissolves in
water. A 10.0 g sample of an ionic compound with a molar mass of 160.0 g/mol was added to a sample of deionized water to produce 60.0 grams of solution. After stirring and dissolving the solid, the temperature was found to change from 25.00 ∘C to 23.92 ∘C . Calculate the enthalpy of solution, Δ????soln , per mole of salt dissolved. Assume the specific heat of the solution is 4.07 J/(g⋅∘C ) and the heat capacity of the calorimeter is 5.30 J/ ∘C .
Examples of complex compound include potassium ferrocyanide K4[Fe(CN)6] and potassium ferricyanide K3[Fe(CN)6]. Other examples include pentaamine chloro cobalt(III) chloride [Co(NH)5Cl]Cl2 and dichlorobis platinum(IV) nitrate [Pt(en)2Cl2](NO3)2.
