Question

What will be the osmotic pressure exerted by an aqueous solution of 200 mL volume at 250C i contains 1.33g dssolved calon cloride? 1.48 4.40 none of the above 0.124 0.620

Answer 1

Answer 2

mass mass f caleium Chloride = 1.33g molar f 110.98 gimo! moles of caleium chloride = 1.33 g 110.98 glinos volume of solution Concentration of solution 20.0599 (M) 0.01198 mol- 200 ml 20.200L. 0.01198 mol. 0. 200 L temperature (T) = 25° C = 298k. R = universal gan instant 8.319 J Osmotic π = pressure 20.0821 molk Lahn molk

T = CRT 0.0599x 0. 0821 x 298 1.465 atm. Osmotic pressure 1.465 ahon. 2 1.48 atre Correct Ans:- 1.48 aton.

for 2nd order reaction after timet - + [a tar] [A] conc. [Ao t a time initial conc. 60 sec. let us consider, [A] = 100 % [A] (100 - 75) = 25 %

1 + [tasta [A.] [ 0.25 60 0.25 1 = 0.05 (cone) sec AY2 - 20 sec. k [Ao 0.05 x 1 This half life half life of the reaction is 20 sec.

A+ 3B Rate d[AJ dt I a[B 3 at d[e] dt Rate of formation of a d[c] dt 0.453 m/s Rate of disapperance of B d[B] at 1 [81 dl c] 3 at dt s d[e] = 3 x 0.453 dt d[B dt 1.359 M/s This rate of disappearence disappearance of B is 1.359 M/s
In the last question options are not right, because osmotic pressure arises when solvent particles of less concentrated solution pass through a semipermeable membrane. Right ans will be solvent & less but such options is not present.