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Grade 12Physical Chemistry

Osmotic pressure of 0.2 M aqueous solution of MgCl2 at 300 k is 4.92 atm. What will be the percentage ionization of the salt??

Profile image of Sai Soumya
8 Years agoGrade 12
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1 Answer

Profile image of Vidhi Shah
8 Years ago
34.482 atmThe external pressure which must be applied on solution side to stop the process of osmosis is called osmotic pressure of the solution. It is calculated as π=ΣinCnRTIn this case πNaCl=0.1×2RT, πNa2SO4=0.2×3RT and πHA=0.5RT×1.2R is the ideal gas constant =0.082lit.atm.mol−1K−1⇒π=0.0821×300(0.2+0.6+0.6)=34.482atm

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