Question

Calculate the osmotic Pressure of
0.25 m Solutions in urea of
-R-0,83 ​

Answer 1

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Osmotic pressure of the solution is given by,

π= CRT= (n/V) RT ------ (1)

where,

C = (n/V) having n = number of moles of solute

V = Volume of solution in litres

We can now substitute the value of number of moles and get the final formula

n = w/M = (Amount of substance)/(Molar mass of substance)

Now, osmotic pressure becomes,

π = (w×R×T)/(M×V)

Solving for M, we get M = (w ×R×T/(π×V))

Substituting the values,

M= 2.414×105 ×10 −3

18×8.314×293

=182 g/mol

Thus, Molecular mass of substance = 182

Answer 2

Answer:

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