A student tries to dissolve a congealed mass of NaOH by adding water to the beaker. The concentration profile of NaOH in the water above it was measured and found to be: The initial and reference...

A student tries to dissolve a congealed mass of NaOH by adding water to the beaker. The concentration profile of NaOH in the water above it was measured and found to be:

The initial and reference temperature of the water is 0°C. ct = 63055 mol/m3 ; Dab = 1.0 × 10−9 m2/s; L = 5 cm. Assume the water properties are constant at the reference temperature values. Data on the partial molar enthalpies of solution as a function of temperature and hence the partial molar heat capacities can be obtained crudely from the enthalpy concentration diagram [14]. What is the temperature profile?