When 221.5 grams of sucrose are mixed in 250 ml of water at 25 degrees C, not all of it dissolves. The result is a heterogenous mixture of aqueous sucrose, water, and solid sucrose. At 25 degrees C, the solubility product of sucrose in water is 1.971 moles/liter of water. The enthalpy of solvation of sucrose in water,deltaHsolv is constant over the temperature range and is DeltaHsolv = +6.01 kj/mole.
1. What is the minimum temperature that the mixture needs to be raised to dissolve all of the glucose to make a homogeneous mixture?
2. Determine the mass of the undissolved glucose in the mixture at room temperature, the minimum temperature necessary to dissolve all of the sugar, and the mass of the crystal that will form when the homogenous solution returns to 32 degrees C.