Composition of air is approximately nitrogen 80 % and 20% oxygen. Find the mole fraction of oxygen in water at 1 atm if the Henry's constant `K_(H)=1.8xx10^(-5)atm^(-1)`

Options

A. `1xx10^(4)`
B. `3.6xx10^(-5)`
C. `3.6xx10^(-6)`
D. `1xx10^(-5)`

Explanation

To find the mole fraction of oxygen in water at 1 atm using Henry's law, we can follow these steps:

### Step 1: Understand the Given Information
- Composition of air: Nitrogen (N₂) = 80%, Oxygen (O₂) = 20%
- Total pressure (P_total) = 1 atm
- Henry's constant (K_H) = 1.8 × 10^(-5) atm^(-1)

### Step 2: Calculate the Partial Pressure of Oxygen (P_O₂)
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