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Determine the osmotic pressure of a solution prepa.red by diHolving 2.5xx 10^(-2) g of a solution 2I. Of water at 25^(@) C, assuming that it is completely dissociated. (R = 0.0821 " L atm K"^(-1) mol^(-1) , " molar mass of" K_(2)SO_(4) = 174 g " mol"^(-1)) |
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Answer» Solution :When `K_(2) SO_(4)` is dissolved in water, IONS are produced. Total number of ions produced = 3 i= 3 `pi = I"CRT " = (I xx N xx R xx T)/(V)` `pi = 3 xx (25 xx 10^(-2)g)/(174 g "MOL"^(-1)) xx (1 xx 0.0821 " L ATM " xx 298)/(2I) = 0.00176 " " K^(-1) mol^(-1) xx 298` K `pi5.27 xx 10^(-3) ` atm |
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