We’re being asked to determine the Kb of water.
Recall that water is amphoteric, it can either act as an acid or base and undergoes self-ionization (autoionization):
H2O(l) + H2O(l) ⇌ H3O+(aq) + OH-(aq)
Kb is the base dissociation constant and it is an equilibrium expression.
When writing an equilibrium expression:
What is the kb of water?
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