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Which of the following solutions has maximum vapour pressure?

Options

  1. A1 M copper sulphate solution
  2. B0.01 M copper sulphate solution
  3. C0.5 M copper sulphate solution
  4. D2 M copper sulphate solution

Correct answer

B. 0.01 M copper sulphate solution

Step-by-step solution

According to Raoult's law, the relative lowering of vapour pressure is directly proportional to the concentration of the solute particles in the solution. P^0 - P_s P^0 C This implies that the vapour pressure of the solution ( P_s ) is inversely proportional to the concentration of the solute. Among the given options, the 0.01 M copper sulphate solution has the minimum concentration. Therefore, it will have the minimum lowering of vapour pressure and consequently the maximum vapour pressure. Answer: 0.01 M copper s

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