Final answer:
To calculate the solute potential of a 1.5M sugar solution at 25°C, use the van 't Hoff equation with a van 't Hoff factor of 1, the value for R (0.0831 L bar/mol K), and temperature in Kelvin (298 K) to find the solute potential.
Step-by-step explanation:
The solute potential (Ys) of a solution can be calculated using the van 't Hoff equation, which is Ys = -iMRT. In this case, the question asks for the solute potential of a 1.5M sugar solution at 25 degrees Celsius in an open container. Assuming that sugar is a non-ionic solute, the van 't Hoff factor (i) is 1. The ideal gas constant (R) is 0.0831 liter bar per mole K, and the temperature (T) must be converted to Kelvin (25°C + 273 = 298 K).
To find the solute potential, we use the formula:
Ys = -(1)(1.5M)(0.0831 L bar/mol K)(298 K)
You then multiply these numbers to find the solute potential.