Which solution would have the lowest freezing point: 0.1 M Magnesium Phosphate Solution
0.1 M Calcium Chloride Solution
0.1 M Potassium Chloride Solution
0.1 M Sodium Chloride Solution

Potasium

Explanation:Urea and glucose do not dissociate in solution. Sodium chloride gives two ions and potassium sulfate gives three ions per formula unit.

Therefore, the effective number of particles is maximum in potassium sulfate , and it shows the maximum depression in freezing point.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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