If a Shallow Pan Is Filled with Water, a Drop

question 26

Multiple Choice

If a shallow pan is filled with water, a drop of red ink is placed in one end of the pan, and a drop of green ink is placed in the other end, which of the following will be true at equilibrium?

• A) The red ink will be uniformly distributed in one half of the pan, and the green ink will be uniformly distributed in the other half of the pan.
• B) The red and green inks will be uniformly distributed throughout the pan.
• C) Each ink will move down its concentration gradient.
• D) The concentration of each ink will be higher at one end of the pan than at the other end.
• E) No predictions can be made without knowing the molecular weights of the pigment molecules.

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