What is the osmotic pressure of a `0.0020` mol `dm^(-3)` sucrose `(C_(12)H_(22)O_(11))` solution at `20^(@)C`? (Molar mass contant, `R = 8.314 JK^(-1) mol^(-1). 1 dm^(3) = 0.001 m^(3))`

Options

A. 4870 Pa
B. 4.87 Pa
C. 0.00487 Pa
D. 0.33 Pa

Answer

A

Explanation

`pi = CRT, C = 0.002 mol dm^(-3) = 2 mol m^(-3)`
`R = 8.314 J K^(-) mol^(-1), T = 293K`
`:. Pi = CRT = 2 xx 8.314 xx 293 = 4872.004 Pa`.