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25. What is the osmotic pressure of a 0.0020 mol

dm-3   sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1  ; 1 dm-3  = 0.001 m3 )

a. 4870 Pa

b. 4.87 Pa

c. 0.00487 Pa

d. 0.33 Pa

Ans. a

(17)

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