A Sample Containing a 50/50 Mixture of Water and D₂O

question 3

Multiple Choice

A sample containing a 50/50 mixture of water and D₂O (1:1 D₂O:H₂O) is placed in a vial and sealed. The liquid/vapor system is allowed to come to equilibrium at room temperature. What will be the relative concentration ratio of the vapor?

• A) there will be more D₂O than H₂O
• B) there will be less D₂O than H₂O
• C) Still 1:1
• D) Indeterminate
• E) none of the above

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