Lead storage battery contains 38% by weight solution of . The van't Hoff factor is 2.67 at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is (Nearest i

Question

Lead storage battery contains 38% by weight solution of . The van't Hoff factor is 2.67 at this concentration. The temperature in Kelvin at which the solution in the battery will freeze is  (Nearest integer).

Given:

Canvas Classes · Accepted Answer

Strategy:
 Find the molality of the sulfuric acid solution from its weight percentage, then calculate the depression in freezing point using the van't Hoff factor () and the cryoscopic constant ().

Step 1: Calculate the molality of 38%  solution
- 38% by weight means 38 g of  in 100 g of solution.
- Mass of solvent (water) = .
- Molar mass of .
- Moles of .

Step 2: Calculate the depression in freezing point ()
Given  and .

Step 3: Find the freezing point in Kelvin
Freezing point of pure wat

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