The correct relationship between the osmotic | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The osmotic pressure $(\pi)$ is a colligative property given by the formula $\pi = iCRT$,where $i$ is the van't Hoff factor,$C$ is the molar conce

Vedclass · Accepted Answer

$\pi_{Na_2SO_4} > \pi_{NaCl}$

Vedclass · Answer

(B) The osmotic pressure $(\pi)$ is a colligative property given by the formula $\pi = iCRT$,where $i$ is the van't Hoff factor,$C$ is the molar concentration,$R$ is the gas constant,and $T$ is the temperature.For $0.1 \ M \ NaCl$,the dissociation is $NaCl ightarrow Na^+ + Cl^-$,so $i = 2$.Thus,$\pi_{NaCl} = 2 	imes 0.1 	imes RT = 0.2 \ RT$.For $0.1 \ M \ Na_2SO_4$,the dissociation is $Na_2SO_4 ightarrow 2Na^+ + SO_4^{2-}$,so $i = 3$.Thus,$\pi_{Na_2SO_4} = 3 	imes 0.1 	imes RT = 0.3 \ RT$.Comparing the two,$0.3 \ RT > 0.2 \ RT$,therefore $\pi_{Na_2SO_4} > \pi_{NaCl}$.

The correct relationship between the osmotic pressure of $0.1 \ M \ NaCl$ and $0.1 \ M \ Na_2SO_4$ is ......

Similar Questions

The osmotic pressure (in $atm$) of an aqueous solution containing $0.01 \ mol$ of $NaCl$ (degree of dissociation $0.94$) and $0.03 \ mol$ of glucose in $500 \ mL$ at $27^{\circ} C$ is $\left(R=0.082 \ L \ atm \ K^{-1} \ mol^{-1}\right)$

The average osmotic pressure of human blood is $7.8 \ bar$ at $37\ ^oC$. What is the concentration of an aqueous $NaCl$ solution that could be used in the blood stream (in $mol/L$)?

In a container,$0.1 \, M \, NaCl$ and $0.05 \, M \, BaCl_2$ solutions are separated by a semi-permeable membrane. Which of the following is correct?

Which of the following statements regarding isotonic solutions is $NOT$ correct?

Calculate the osmotic pressure of a solution containing $0.025 \ mol$ of glucose in $100 \ mL$ of water at $300 \ K$. $\left[R = 0.082 \ atm \ dm^3 \ mol^{-1} \ K^{-1}\right]$ (in $atm$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module