Ask Question
28 July, 16:31

The vapor pressure of pure water at 30°C is 40 torr. If NaCl is dissolved into a sample of water until the total vapor pressure of the mixture at 30°C is 32 torr, what is the mole fraction of NaCl?

+5
Answers (1)
  1. 28 July, 16:58
    0
    Mole fraction is 0.2

    Explanation:

    You have to apply the colligative property about vapour pressure which formula is:

    ΔP = P°. Xm

    Where ΔP = P° - P

    Pressure of vapour from pure solvent (P°) - Pressure of vapour from solution

    40 Torr - 32 Torr = 40 Torr. Xm

    8 Torr / 40 Torr = 0.2. > Xm
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The vapor pressure of pure water at 30°C is 40 torr. If NaCl is dissolved into a sample of water until the total vapor pressure of the ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers