Question

Which of the following solution is hypotonic in comparison with 0.15 M KCl solution ?(Assume
that ionic solid substances completely dissociates in the solution)
(a) 0.1 M CaCl2 (b) 0.08 M FeCl
(0.2 M urea (d) 0.12 BaCl
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Answer 1

Answer:

For isotonic solutions, osmotic pressure should be the same or equal.

For 0.1 M Ca(NO3)2  and 0.1 M Na2 SO4 , osmotic pressure of both the solutions are the same.

As for Ca(NO3)2⟹i=3

As for Na2SO4⟹i=3

Osmotic pressure of Ca(NO3 )2  = i×CRT=3×CRT

Osmotic pressure of Na2 SO4  =i×CRT=3×CRT

As osmotic pressure are equal, so they are isotonic.

Therefore, the correct option is A

Hope this helps you !