A) Glucose
B) \[BaC{{l}_{2}}\]
C) \[MgC{{l}_{2}}\]
D) \[NaCl\]
Correct Answer: B
Solution :
Molar concentration of glucose \[=0.5\text{ }M\] Molar concentration of \[NaCl=0.1\text{ }M\] Molar concentration of \[BaC{{l}_{2}}=0.5\text{ }M\]and molar concentration of \[MgC{{l}_{2}}=0.1M\] However as \[NaCl,\] \[BaC{{l}_{2}}\] and \[MgC{{l}_{2}}\] is an electrolyte. One mole of \[NaCl\] give two mole ions, therefore molar concentration of particles in the solution \[=0.2\text{ }M\] One mole of \[BaC{{l}_{2}}\] give three mole ions, therefore molar concentration of particles in the solution \[=1.5\text{ }M\]. and one mole of \[MgC{{l}_{2}}\] give three mole ions, therefore molar concentration of particles in solution \[=\text{0}.3M\]. As, osmotic pressure is directly proportional to the number of particles in the solution, hence, increasing order of osmotic pressure will be. \[Glucose<NaCl<MgC{{l}_{2}}<BaC{{l}_{2}}\]
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