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 (aq) and 0.25 M KBr(aq)

B. 0.100 M (aq) and 0.100 M (aq)

Question

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 (aq) and 0.25 M KBr(aq)

B. 0.100 M (aq) and 0.100 M (aq)

C. 0.05 M (aq) and 0.25 M NaCl(aq)

D. 0.15 M NaCl(aq) and 0.1 M (aq)

E. 0.02 M (aq) and 0.05 M KCl(aq)

Canvas Classes · Accepted Answer

Strategy:
 Osmotic pressure () is proportional to the effective concentration (). To find solutions with the same osmotic pressure, we must calculate the value of  for each member of the pairs provided.

Step 1: Analyze each pair
- A. 0.50 M  () and 0.25 M  (). Match.
- B. 0.10 M  () and 0.10 M Mohr's Salt (). Note:  dissociates into , , and . Match.
- C. 0.05 M  () and 0.25 M  (). No match.
- D. 0.15 M  () and 0.1 M  (). Match.
- E. 0.02 M Carnallite () and 0.05 M  (). Note: . Match.

Total mat

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