kb of ammonia|Base Dissociation Constants Kb Chemistry Tutorial,marta diaz hot

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

The constantkb of ammonias Ka and Kb are related as shown in Equation 16.5.10. The pKa and pKb for an acid and its conjugate base are related as shown in Equation 16.5.15 and Equation 16.5.16.

Compare the values of the base dissociatkb of ammoniaion 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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