Question

Which solution will provide the LOWEST freezing point? Group of answer choices 1.2 M MgCl2 1.60 M KI 1.0 M Na2CO3 1.5 M NaCl

Answer 1

KI 1.0 M

Step-by-step explanation:

Freezing point of a substance is a colligative property. This means that it depends on the amount of substance present is the system.

The freezing point is given by; T - Ta = K * m * i

Where;

T = freezing point of the pure solution

Ta = freezing point of the solution containing the solute

K = freezing point constant

m = molality of the solution

i= Van't Hoff factor

If we look at all the options provided, KI has only two particles in solution and a molality of 1.0 m hence it should exhibit the lowest freezing point of solution.