For the system KNO3-NaNO3-H2O, a ternary point exists at 5°C at which the two anhydrous salts are in equilibrium with a saturated solution containing 9.04% KNO3 and 41.01% NaNO. Determine analytically the maximum weight of KNO3 which can be recovered pure from a salt mixture containing 70 g of KNO3 and 30 g NaNO3 by crystallization from an aqueous solution at 5°C. Draw the phase diagram and show your solution.

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The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.