Exhibit 11-2
The following question(s) pertain to the dissolution of 200.0 g of KMnO4 into 600.0g. of water.
Refer to Exhibit 11-2. What is the molality of the KMnO₄ in the 800.0 gram solution?

Question

Exhibit 11-2 The following question(s) pertain to the dissolution of 200.0 g of KMnO4 into 600.0g. of water. Refer to Exhibit 11-2. What is the molality of the KMnO₄ in the 800.0 gram solution?

Quizplus · Accepted Answer

Molality (m) is calculated as moles of solute per kilogram of solvent. First, calculate the moles of KMnO4: 200.0 g / 158.04 g/mol = 1.265 moles. The mass of the solvent (water) is 600.0 g or 0.600 kg. Molality = 1.265 moles / 0.600 kg = 2.109 m.

Exhibit 11-2 The Following Question(s) Pertain to the Dissolution of 200.0 G