Question

is 0.1 (M) NaCl and 0.1 (M) glucose are isotonic??​

Answer 1

Explanation:

Isotonic solutions have same molar concentration of solute particles in solution. Molar concentration of particles in solution are 0.1 M in glucose, 2 x 0.05M in NaCl, 3 x 0.05 in BaCl2 and 4 x 0.1 in AlCl3. Therefore, 0.1 M glucose and 0.05 M NaCl solutions are isotonic. B.

Answer 2

Answer:

Isotonic solutions are those which have same osmotic pressure and hence same molar concentration. We know that osmotic pressure,

straight pi =i CRT

where i = total no. of ions in the electrolyte solution.

0.1 M NaCl.

NaCl rightwards harpoon over leftwards harpoon stack Na to the power of plus with 1 space ion below plus stack Cl to the power of minus with 1 space ion below

i = 1 + 1 = 2

therefore straight pi = i CRT = 2 × 0.1 RT = 0.2 RT

Since, 0.1 RT and 0.2 RT differ, these are not isotonic solutions.

Option (b) 0.1 M Glucose

Glucose does not ionize. So, straight pi = CRT = 0.1 RT