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Calculate the osmotic pressure in atm of a 3.85L aqueous solution containing 67.8g of MgCl2 at...

Calculate the osmotic pressure in atm of a 3.85L aqueous solution containing 67.8g of MgCl2 at 22.00 oC.

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Answer #1

MgCl2 (aq) --------------> Mg^2+ (aq) + 2Cl^- (aq)

       no of particles i = 3

molarity   = W/G.M.Wt* volume of solution in L

               = 67.8/95*3.85    = 0.185M

T         = 22 + 273 = 295K

    = iCRT

     = 3*0.185*0.0821*295    = 13.45atm >>>>>answer

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