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Author Question: A result of the common-ion effect is ________. A) that some ions, such as Na+ (aq), frequently ... (Read 245 times)

ENagel

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A result of the common-ion effect is ________.
 
  A) that some ions, such as Na+ (aq), frequently appear in solutions but do not participate in solubility equilibria
  B) that common ions, such as Na+ (aq), don't affect equilibrium constants
  C) that the selective precipitation of a metal ion, such as Ag+, is promoted by the addition of an appropriate counterion (X-) that produces a compound (AgX) with a very low solubility
  D) that ions such as K+ and Na+ are common ions, so that their values in equilibrium constant expressions are always 1.00
  E) that common ions precipitate all counter-ions

Question 2

A second-order reaction has a half-life of 12 s when the initial concentration of reactant is 0.98 M. The rate constant for this reaction is ________ M-1s-1.
 
  A) 12
  B) 2.0  10-2
  C) 8.5  10-2
  D) 4.3  10-2
  E) 4.3


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rachel

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ENagel

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Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)


hramirez205

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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