kb of ammonia|7.12: Relationship between Ka, Kb, pKa, and pKb,bellaskies

– Consider the base dissociation-constant expression for ammonia and the acid dissociation constant expression for its conjugate acid, ammonium ion:

Aqueous ammonia (NH3) is a weak basic solution. pH of NH3 skb of ammoniaolution is calculated by using Kb value of NH3. Online calculator can be used to check your pH values.

Compare the values kb of ammoniaof the base dissociation constant for ammonia and methylamine: K b (ammonia) = 1.8 × 10 -5 (smaller) K b (methanamine) = 4.4 × 10 -4 (larger) At 25°C, using。

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