Q.

A decimolar solution of potassium ferrocynide is 50%  dissociated at 300K. Calculate the Osmotic pressure of the solution

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a

7.48×105  N/m2

b

6.67×105  N/m2

c

1.32×105  N/m2

d

3.2×105  N/m2

answer is A.

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Detailed Solution

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K4Fe(CN)61x4K+4x+Fe(CN)64x

i=1x+4x+x1=1+4×0.5=3

π=iCRT

=3×0.1×103×8.314×300

=7.48×105N/m2

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