Question

Which of the following pairs of solutions can we
expect to be isotonic at the same temperature?
(1) 0.1 M NaCl and 0.1 M Na,so
(2) 0.1 M urea and 0.1 M Naci
(3) 0.1 M urea and 0.2 M MgCI,
(4) 0.1 M Ca(NO3)2 and 0.1 M Na2so4​

Answer 1

Answer:

Hey....!!!

As we know ,

Isotonic nature of solutions is taken into consideration on the basis of Osmotic Pressure (π)....

If π1 = π2 ...

then the solutions are isotonic..

So here,

it can be measured using...

Concentration × no. of ions in which it will break...

So ....

checking option (d)...

Ca(NO3)2 - concentration = 0.1 M

No of ions = Ca2+ +2( NO3) = 3

Na2SO4 - concentration - 0.1 M

No of ions = 2Na+ + (SO4)2- = 3

So equating....

0.1×3 = 0.1×3

0.3(π1) =0.3 (π2)

Hence option (d) is correct one....

Hope this helps....☺️❤️❣️⭐

Answer 2

Answer:

option 4 is correct

Explanation:

Hope it will help you