What is the osmotic pressure of a solution containing 25.7 g of sugar (C12H22O11) in one liter of solution...?

What is the osmotic pressure of a solution containing 25.7 g of sugar (C12H22O11) in one liter of solution at 20°C?

Answer:
Pi=MRT
M=25.7/(MW sugar)/(volume solution)= 25.7/(342.28808)/(1L)
M=0.075083 molar
R=0.082057 L-atm/mol-K
T=20+273=293K
Pi= (0.075083M) (0.082057 L-atm/mol-K) (293K)
Pi=1.81 atm

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