Deduce Vant Hoff Equation
Answers
Answer:
Consider a dilute solution of a volume V (in dm
3
) containing W grams of a substance having molecular weight M at an absolute temperature T. Then, concentration of the solution, C=n/V and No. of moles of the substance, n=W/M.
By van't Haff. Boyle's law, at a constant temperature, the osmotic pressure of a solution is directly proportional to its molar concentration or inversely proportional to the volume of the solution. Thus,
παC(when temperature is constant)
Van't Hoff Charle's law at the constant concentration the osmotic pressure of a dilute solution is directly proportional to the absolute temperature(T) i.e.
παT
παCT
v=CRT.
The equation is called van't Hoff general solution equation.
R is constant of proportionality, also called general solution constant or gas constant.