Calculate the osmotic pressure (in torr) of 5.88 L of an aqueous 0.144 M solution at 28°C if the solute concerned is totally ionized into three ions (for example, it could be Na₂SO₄ or MgCl₂). A) 8.11 × 10³ torr B) 2.55 × 10⁴ torr C) 2.70 × 10³ torr D) 3.31 × 10^-1 torr E) 7.55 × 10² torr

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Quizplus · Accepted Answer

The osmotic pressure (π) is calculated using the formula π = iMRT, where i is the van't Hoff factor (3 for complete ionization into three ions), M is the molarity (0.144 M), R is the ideal gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin (28°C = 301 K). Converting atm to torr (1 atm = 760 torr), the calculation gives approximately 8.11 × 10³ torr.

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