What is osmotic pressure of a semi molar solution at $27^{7} \mathrm{C} ? (\mathrm{R}=0.082)$
What is osmotic pressure of a semi molar solution at $27^{7} \mathrm{C} ?
(\mathrm{R}=0.082)$
- 4.96atm
- 2.46 atm
- 20.5 atm
- 12.3 atm
Solution
For a semimolar solution, Molarity $(M)=0.5$
$\pi=\mathrm{MRT}=0.5 \mathrm{~mol} \mathrm{~L}^{-} \times 0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1} \times 300 \mathrm{~K}=12.3 \mathrm{~atm}$
Asked in: MHT CET 2020 (16 Oct Shift 2)
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