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The number of pairs of the solution having the same value of the osmotic pressure from the following is (Assume 100 % ionization) A. 0 . 500   M   C 2 H 5 OH ( aq ) and 0 . 25   M   KBr ( aq ) B. 0 . 100   M   K 4 Fe ( CN ) 6 ( aq ) and 0 . 100   M FeSO 4 NH 4 2 SO 4 ( aq ) C. 0 . 05   M   K 4 Fe ( CN ) 6 (aq) and 0 . 25   M   NaCl ( aq ) D. 0 . 15   M &#160

Correct answer

4

Step-by-step solution

We know, π = iCRT π ∝ iC A. 0 . 500   M   C 2 H 5 OH ( aq ) iC = 1 × 0 . 5 = 0 . 5 and 0 . 25   M   KBr ( aq ) iC = 2 × 0 . 25 = 0 . 5 B. 0 . 100   M   K 4 Fe ( CN ) 6 ( aq ) iC = 5 × 0 . 1 = 0 . 5 and 0 . 100   M FeSO 4 NH 4 2 SO 4 ( aq ) iC = 5 × 0 . 1 = 0 . 5 C. 0 . 05   M   K 4 Fe ( CN ) 6 iC = 5 × 0 . 05 = 0 . 25 (aq) and 0 . 25   M   NaCl iC = 2 × 0 . 25 = 0 . 5 ( aq ) D. 0 . 15   M   NaCl ( aq ) iC

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