Problem: What is the kb of water?

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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)

acid        base 

Kb is the base dissociation constant and it is an equilibrium expression

When writing an equilibrium expression:

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What is the kb of water?

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Our tutors have indicated that to solve this problem you will need to apply the Ka and Kb concept. You can view video lessons to learn Ka and Kb. Or if you need more Ka and Kb practice, you can also practice Ka and Kb practice problems.

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Based on our data, we think this problem is relevant for Professor Driessen's class at UMN.