18) With this type of exam there are likely concepts that yo…
18) With this type of exam there are likely concepts that you studied and learned in class that were not captured on this exam. Describe a concept that you have learned in class (that is not included in the exam; including the final essay question) and explain why it has been meaningful to you.
Read DetailsWhich statement(s) is/are true regarding precipitate particl…
Which statement(s) is/are true regarding precipitate particle size?Particle size must be large enough to not clog or pass through a filter.Particle size is controlled by precipitation conditions.Thermodynamics favors larger crystals because the surface atoms have higher energy than internal atoms, and the fraction of atoms on the surface is smaller for larger crystals than smaller crystals.Ostwald ripening is the process via which smaller particles redissolve and larger crystals grow.
Read DetailsThe final precipitation product should have a known, stable…
The final precipitation product should have a known, stable chemical composition. One way to obtain a known, stable chemical composition is via _____________, which is defined as the strong heating of a precipitate to change the chemical composition of the precipitate to a more stable form.
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