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Solutions A, B, C and D are respectively 0.1 M glucose, 0.05 M NaCl , 0.05 M BaCl ₂ and 0.1 M AlCl ₃ . Which one of the following pairs is isotonic?

Options

  1. AA and B
  2. BB and C
  3. CA and D
  4. DA and C

Correct answer

A. A and B

Step-by-step solution

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

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