Question

concentration of glucose solution which is isotonic to 6 gram per litre of urea solution​

Answer 1

π = CRT

if the temperature is constant  concentration of both the solution are equal

so = 6g/ltr

Answer 2

Given:

The concentration of urea = 6 gm/L

To Find:

The concentration of glucose which is isotonic to the given concentration of urea.

Calculation:

- M.wt of glucose = 180 gm

- M.wt of urea = 60 gm

- The Molarity of urea, M1 = (6 × 1000) / (60 × 1000)

⇒ M1 = 1 / 10 = 0.1 M

- Isotonic solutions are two solutions which have the same osmotic pressure.

⇒ Π (glucose) = Π (urea)

⇒ M2 R T = M1 R T

⇒ M2 = 0.1 M

⇒ No of moles of glucose in 1 litre = 0.1

⇒ Concentration in g/L = 0.1 × 180

⇒ Concentration = 18 gm/L

- So, the concentration of glucose solution which is isotonic to 6 g/L of urea solution​ is 0.1 M or 18 g/L.