When Ammonium (NH4+) Is Placed In Water, A Chemical Reaction ...
Question
When ammonium (NH4+) is placed in water, a chemical reaction occurs and an equilibrium is established as shown below. NH4+ (aq) + H2O (l) ⇄ NH3 (aq) + H3O+ (aq) The pKa of NH4+ is 9.25. Predict whether the acid form (NH4+) or the base form (NH3) is predominant at pH = 7.4. Explain your answer. When ammonium (NH4+) is placed in water, a chemical reaction occurs and an equilibrium is established as shown below. NH4+ (aq) + H2O (l) ⇄ NH3 (aq) + H3O+ (aq) The pKa of NH4+ is 9.25. Predict whether the acid form (NH4+) or the base form (NH3) is predominant at pH = 7.4. Explain your answer. Show more…Added by Kimberly A.
Step 1
The pKa value tells us about the acidity of a substance: the lower the pKa, the stronger the acid. In this case, the pKa of NH4+ is 9.25. This means that NH4+ is a weak acid, as it has a relatively high pKa value. Show more…
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