Salt, NaCl, has a solubility of 35.7 g per 100 g of water at 0° Celsius. The solubility of salt in water does not vary appreciably with temperature. NaCl is an electrolyte that is commonly used to melt ice by lowering its melting point. What is the lowest possible melting point for ice that could be obtained considering the solubility of NaCl in water? The Kf for H₂O is 1.86 degrees Celsius/m