Question

The number of pairs of the solutions 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. $0.100 \,M \,K _4\left[ Fe ( CN )_6\right]$ (aq) and $0.100\, M\, FeSO _4\left( NH _4\right)_2 SO _4$ (aq)
C. $0.05\, M \,K _4\left[ Fe ( CN )_6\right]$ (aq) and $0.25\, M\, NaCl ( aq )$
D. $0.15\, M\, NaCl ( aq )$ and $0.1\, M \,BaCl _2$ (aq)
E. $0.02\, M\, KCl MgCl _2 \cdot 6 H _2 O$ (aq) and $0.05\, M\, KCl$ (aq)

Answer 1

The correct answer is 4
π=iCRT
π∝iC
A,B,D and E have same value of osmatic pressure.