Assuming the compounds to be completely dissociated in aqueous solution,identify the pair of the solutions that can be expected to be isotonic at the same temperature.
- A$0.01 \ M$ urea and $0.01 \ M \ NaCl$
- B$0.02 \ M \ NaCl$ and $0.01 \ M \ Na_2SO_4$
- C$0.03 \ M \ NaCl$ and $0.02 \ M \ MgCl_2$
- D$0.01 \ M$ sucrose and $0.02 \ M$ glucose
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