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Let's assume the distribution coefficient of caffeine between dichloromethane and water is 3. You have a...

  1. Let's assume the distribution coefficient of caffeine between dichloromethane and water is 3. You have a 10mL aqueous solution of caffeine that contains 100mg of caffeine dissolved in it. You also have 10mL dichloromethane. If you do just one extraction using 10mL dichloromethane, how much caffeine you can recover from the aqueous solution?

    25mg

    50mg

    75mg

    100mg

    None of the above

  2. QUESTION 3

  3. Let's assume the distribution coefficient of caffeine between dichloromethane and water is 3. You have a 10mL aqueous solution of caffeine that contains 100mg of caffeine dissolved in it. You also have 10mL dichloromethane. Instead of doing just one extraction, you decided to do two extractions with 5mL portions of dichloromethane. How much caffeine you can recover from the aqueous solution?

    24mg

    60mg

    75mg

    84mg

    None of the above
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