Molal depression constant for a solvent is 4.0 K kg mol⁻¹. The depression in the freezing point of the solvent for 0.03 mol kg⁻¹ solution of is:

(Assume complete dissociation of the electrolyte)

Question

Molal depression constant for a solvent is 4.0 K kg mol⁻¹. The depression in the freezing point of the solvent for 0.03 mol kg⁻¹ solution of  is:

(Assume complete dissociation of the electrolyte)

Canvas Classes · Accepted Answer

Strategy:
 Freezing point depression is calculated using . Identify the van't Hoff factor for the completely dissociated salt.

Step 1: Identify } i 	ext{ for } \ce{K2SO4} 	ext{

Total ions () = 3. Since dissociation is complete, .

Step 2: Calculate } \Delta Tf 	ext{

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