Question

Statement: The increasing order of osmotic pressure of $0.1M$ aqueous solution containing different electrolyte is as follows $0.1M$ glucose $<0.1M$sodium chloride $<0.1M$ magnesium chloride.

State whether the given statement is true or false.

• A. True
• B. False

Answer 1

The correct option is A True

The given statement is true.
The increasing order of osmotic pressure of 0.1M aqueous solution containing different electrolyte is as follows 0.1 M glucose < 0.1M sodium chloride <0.1M magnesium chloride.
The osmotic pressure $\pi =iCRT$, where ${}^{\prime }{i}^{\prime }$ is the vant Hoff's factor, $C$ is molar concentration, $R$ is ideal gas constant and $T$ is absolute temperature. Since, $C,R$ and $T$ have same values for different solutions, the solution having higher value of ${}^{\prime }{i}^{\prime }$ will have higher value of the osmotic pressure. ${}^{\prime }{i}^{\prime }$ represents the number of ions obtained from 1 solute molecule. The ionization one molecule of glucose, sodium chloride and magnesium chloride gives 1, 2 and 3 ions/particles. Glucose is non-electrolyte and does not undergo dissociation.