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MCQ

**Choose the most correct option.**

A living cell contains a solution which is isotonic with 0.3 M sugar solution. What osmotic pressure develops when the cell is placed in 0.1 M KCl solution at body temperature?

#### Options

5.08 atm

2.54 atm

4.92 atm

2.46 atm

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#### Solution

**2.54 atm**

**Explanation:**

π = i_{1}M_{1}RT − i_{2}M_{2}RT

= [(1 × 0.3 mol dm^{−3}) − (2 × 0.1 mol dm^{−3})] × 0.08205 atm dm^{3} K^{−1} mol^{−1} × 310 K

= 2.54 atm

Is there an error in this question or solution?