What is the mole fraction of the solute in 2.5 m aqueous solutions ?

Explanation

To find the mole fraction of the solute in a 2.5 molal aqueous solution, we can follow these steps:

### Step 1: Understand the definition of molality
Molality (m) is defined as the number of moles of solute per kilogram of solvent. In this case, a 2.5 molal solution means there are 2.5 moles of solute in 1 kg of water (solvent).

### Step 2: Identify the components
- Moles of solute (n1) = 2.5 moles
- Mass of solvent (water) = 1 kg = 1000 g
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