Calculate the osmotic pressure of a 6.0 × 10-2 M solution of NaCl at 20°C (293 K).

3 answers

Π = iMRT

where
Π = osmotic pressure in atm
i = van 't Hoff factor of the solute.
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M = molar concentration in mol/L
R = universal gas constant = 0.08206 L·atm/mol·K
T = absolute temperature in K
esrdtfhg
There are 2 particles in the equation. One for Na and one for Cl. so it would be i=2 M=6.0x10^-2 R=.0821 and T=293. The rest is up to you.