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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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joxley3 joxley3
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6 years ago

Compound A has a refractive index of 1.4577 at 20, while compound B (miscible with com
  pound A) has a refractive index of 1.5000 at the same temperature.
  (a) How could you experimentally determine if the refractive indexes of mixtures of A and B
  follow a linear relationship to the mole percent compositions of the mixtures?
  (b) If the relationship is linear, what is the composition (in mole percent) of a mixture that has
  a refractive index of 1.4678 at 20C?

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#1
6 years ago

(a) Prepare several mixtures of A and B with known compositions. Determine their refractive
indexes. Construct a graph of mol versus nD and see if the points fall on the line joining
1.4577 (100A) and 1.5000 (100B).
(b) 76 A24 B (from the graph not shown here)

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