If the osmotic pressure of a 0.010 M aqueous solution of sucrose at 27° C is 0.25 atm, then the osmotic pressure of a 0.010 M aqueous solution of NaCl at 27° C is

Question

If the osmotic pressure of a 0.010 M aqueous solution of sucrose at 27° C is 0.25 atm, then the osmotic pressure of a 0.010 M aqueous solution of NaCl at 27° C is (A) 0.062 atm (B) 0.12 atm (C) 0.25 atm (D) 0.50 atm

Tardigrade Admin · Accepted Answer

Osmotic pressure =i C R T, For both the solutions, all other conditions are similar except 'i' which is 1.0 for sucrose while 2.0 for NaCl. Therefore, osmotic pressure of NaCl =2 × 0.25 =0.50 atm

Q. If the osmotic pressure of a $0.010 M$ aqueous solution of sucrose at $2 7^{\circ} C$ is $0.25$ atm, then the osmotic pressure of a $0.010 M$ aqueous solution of $N a Cl$ at $2 7^{\circ} C$ is

0.062 atm

0.12 atm

0.25 atm

0.50 atm

Osmotic pressure $= i CRT$ , For both the solutions, all other conditions are similar except ' $i$ ' which is $1.0$ for sucrose while $2.0$ for $N a Cl$ .
Therefore, osmotic pressure of $N a Cl$
$= 2 \times 0.25$
$= 0.50 a t m$

Q. If the osmotic pressure of a 0.010M aqueous solution of sucrose at 27∘C is 0.25 atm, then the osmotic pressure of a 0.010M aqueous solution of NaCl at 27∘C is