PH of 0.1M BOH (weak base) is found to be 12.The solution at temperatu...
PH of 0.1M BOH (weak base) is found to be 12.The solution at temperatu...
Calculation of Osmotic Pressure at Temperature Tk
- The pH of a 0.1M solution of a weak base, such as BOH, can be used to determine the concentration of hydroxide ions in the solution. In this case, a pH of 12 indicates a pOH of 2 (since pH + pOH = 14).
- Using the pOH value, we can calculate the concentration of hydroxide ions ([OH-]) in the solution. Since BOH is a weak base, we can assume that the concentration of OH- is equal to the concentration of BOH that has dissociated.
- With the concentration of OH- known, we can calculate the osmotic pressure of the solution using the formula: π = nRT, where n is the concentration of the solute in mol/L, R is the gas constant, and T is the temperature in Kelvin.
- Substituting the values into the formula, we get: π = 0.1 * R * Tk
- Since R is a constant, the osmotic pressure is directly proportional to the temperature T. Therefore, the osmotic pressure at temperature Tk will be 0.1 * R * Tk, which corresponds to option C.
Therefore, the correct answer is option C: 0.11RT.
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