Homework Answers
given
weight per liter = 0.750 g of NaCl
molecular weight of NaCl = 58.5 g/ mol
molarity = 0.750/ 58.5 = 0.0128 M
osmotic pressure = i * M * R * T
i = vant hoff factor ( for NaCl 1.8)
M = Molarity mol/L
R = gas Constant (L atm / mol K ) = 0.08206
T= temperature = 298 K
osmotic pressure = 1.8 * 0.0128 * 0.0826 * 298
osmotic pressure = 0.564 atm = 428.64 torr
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