14.5.4 CIA Demonstration: The Cobalt(II)-Catalyzed Reaction of Potassium Sodium Tartrate Flashcards Preview

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Flashcards in 14.5.4 CIA Demonstration: The Cobalt(II)-Catalyzed Reaction of Potassium Sodium Tartrate Deck (2)
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1
Q

CIA Demonstration: The Cobalt(II)-Catalyzed Reaction of Potassium Sodium
Tartrate

A
  • A catalyst is a substance which decreases the activation energy of a reaction, thereby increasing the reaction rate.
  • Although a catalyst may change forms during the course of a reaction, at the end of the reaction the catalyst will be unchanged overall.
2
Q

note

A
  • A catalyst is a substance which decreases the activation energy of a reaction, thereby increasing the reaction rate.
  • The reaction between potassium sodium tartrate, hydrogen peroxide, and hydroxide ion is slow even at 70 ̊C. Adding a catalyst speeds up this reaction considerably.
  • Cobalt(II) ion catalyzes the reaction between potassium sodium tartrate, hydrogen peroxide, and hydroxide ion.
  • Cobalt(II) ion is red in aqueous solution.
  • During the course of the reaction, the cobalt(II) ion forms a complex ion with tartrate ion. This complex ion has a dark greenish color.
  • Although a catalyst may change forms during the course of a reaction, at the end of the reaction the catalyst will be unchanged overall.
  • After the reaction has reach completion, the solution of cobalt(II) ion catalyst has returned to its original red color

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