The observed osmotic pressure for a 0 . 10 M solution of Fe ( NH 4 ) 2 ( SO 4 ) 2 at 25 ° C is 10 . 8 atm . The expected and experimental (observed) values of Van't Hoff factor ' i ' will be respectively; ( R = 0 . 082 L at

Question

The observed osmotic pressure for a 0 . 10 M solution of Fe ( NH 4 ) 2 ( SO 4 ) 2 at 25 &#176; C is 10 . 8 atm . The expected and experimental (observed) values of Van't Hoff factor ' i ' will be respectively; ( R = 0 . 082 L atm k - mol - 1 )

Quantrex Academy · Accepted Answer

Correct answer: C. 5 and 4 . 42

&#960; = i C R T. 1 0 . 8 = i &#215; 0 . 1 0 &#215; 0 . 0 8 2 &#215; 2 9 8 i = 1 0 . 8 0 . 1 0 &#215; 0 . 0 8 2 &#215; 2 9 8 = 1 0 . 8 2 . 4 4 3 6 = 1 0 . 8 2 . 4 4 3 8 = &#160; 4 . 42 (experimental value) FeSO 4 . NH 4 2 0 &#183; 1 M SO 4 &#10230; Fe aq 2 + 0 1 M + 2 SO 4 aq 2 - 0 &#183; 2 M + 2 NH 4 aq + 0 &#183; 2 M i (expected) = 0 &#183; 5 M 0 &#183; 1 M = 5

The observed osmotic pressure for a 0 . 10 M solution of Fe ( NH 4 ) 2 ( SO 4 ) 2 at 25 ° C is 10 . 8 atm . The expected and experimental (observed) values of Van't Hoff factor ' i ' will be respectively; ( R = 0 . 082 L atm k - mol - 1 )

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The observed osmotic pressure for a 0 . 10 M solution of Fe ( NH 4 ) 2 ( SO 4 ) 2 at 25 &#176; C is 10 . 8 atm . The expected and experimental (observed) values of Van&#39;t Hoff factor &#39; i &#39; will be respectively; ( R = 0 . 082 L atm k - mol - 1 )

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The observed osmotic pressure for a 0 . 10 M solution of Fe ( NH 4 ) 2 ( SO 4 ) 2 at 25 ° C is 10 . 8 atm . The expected and experimental (observed) values of Van't Hoff factor ' i ' will be respectively; ( R = 0 . 082 L atm k - mol - 1 )