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TS EAMCET · Chemistry · Solutions

Which one of the following is an isotonic pair of solutions?

  1. A \(0.15 \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_4\)
  2. B \(0.2 \mathrm{M}\) Urea and \(0.1 \mathrm{M}\) Sugar
  3. C 0.1 \(\mathrm{MBaCl}_2\) and \(0.2 \mathrm{M}\) Urea
  4. D \(0.4 \mathrm{M} \mathrm{MgSO}_4\) and \(0.1 \mathrm{MNH}_4 \mathrm{Cl}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(0.15 \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_4\)

Step-by-step Solution

Detailed explanation

Two solutions are isotonic if they have same molar concentrations of the particles. (a) \(0.15 \mathrm{M} \mathrm{NaCl}\) and \(0.1 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_4\) \(\mathrm{NaCl}\) is an electrolyte which dissociates to give 2 ions, thus concentration of ions in the…