At 300K, what is the relation between the osmotic pressure of two equimolar solutions, onewhose Van’t Hoff factor is 2 and for the other is ½?
Question
At 300K, what is the relation between the osmotic pressure of two equimolar solutions, onewhose Van’t Hoff factor is 2 and for the other is ½?
Solution
To determine the relation between the osmotic pressure of two equimolar solutions at 300K, one with a Van't Hoff factor of 2 and the other with a Van't Hoff factor of 1/2, we can use the formula for osmotic pressure:
π = iMRT
Where: π is the osmotic pressure, i is the Van't Hoff factor, M is the molarity of the solution, R is the ideal gas constant, and T is the temperature in Kelvin.
For the solution with a Van't Hoff factor of 2, the osmotic pressure can be calculated as:
π1 = (2)(M)(R)(T)
For the solution with a Van't Hoff factor of 1/2, the osmotic pressure can be calculated as:
π2 = (1/2)(M)(R)(T)
To find the relation between the two osmotic pressures, we can divide π1 by π2:
π1/π2 = [(2)(M)(R)(T)] / [(1/2)(M)(R)(T)]
Simplifying the equation, we can cancel out the common factors:
π1/π2 = 4
Therefore, the relation between the osmotic pressure of the two equimolar solutions is that the osmotic pressure of the solution with a Van't Hoff factor of 2 is four times greater than the osmotic pressure of the solution with a Van't Hoff factor of 1/2.
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