A solution of glucose (C6H12O6) is isotonic with 4 g of urea (NH2-CO-NH2) per litre of solution. The concentration of glucose is:

Question

A solution of glucose (C6H12O6) is isotonic with 4 g of urea (NH2-CO-NH2) per litre of solution. The concentration of glucose is: (A) 4 g/L (B) 8 g/L (C) 12 g/L (D) 14 g/L

Tardigrade Admin · Accepted Answer

Isotonic solution has same conc π1=π2 C1=C2 n1 = n2 (W1/M1)=(W2/M2) So, (x/180)=(4/60) ⇒ x=12 g

Q. A solution of glucose $(C_{6} H_{12} O_{6})$ is isotonic with $4 g$ of urea $(N H_{2} - CO - N H_{2})$ per litre of solution. The concentration of glucose is:

$4 g / L$

$8 g / L$

$12 g / L$

$14 g / L$

Isotonic solution has same conc
$π_{1} = π_{2} C_{1} = C_{2} n_{1} = n_{2}$
$\frac{W _{1}}{M _{1}} = \frac{W _{2}}{M _{2}}$
So, $\frac{x}{180} = \frac{4}{60}$
$\Rightarrow x = 12 g$

Q. A solution of glucose (C6​H12​O6​) is isotonic with 4g of urea (NH2​−CO−NH2​) per litre of solution. The concentration of glucose is:

4g/L

8g/L

12g/L

14g/L