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Autoionization of water

  • Thread starter lha08
  • Start date
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1. Homework Statement
i was wondering if anyone knows why water is ignored in the autoionization of water? thanks


2. Homework Equations
H2O+H2O= H3O+OH
Kc=[H][OH]


3. The Attempt at a Solution
 

Ygggdrasil

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In an aqueous solution (i.e. a solution where water is the solvent), the concentration of water is about 55M. Any reactions that occur in water that use water as a reactant or product will not significantly change the concentration of water in the solution. Therefore, one can treat [H2O] as a constant that gets added into the equilibrium constant.
 

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