Why does ammonia solution, NH3 that has the same concentration as potassium hydroxide, KOH have a lower pH value?
Answers
Explanation:
As we know that ph value is inversely proportional to the hydronium ion concentration i.e hydrogen ions.Now NH3 has 3 atoms of hydrogen or 3 hydrogen ions but KOH has only one hydrogen ion.Therefore NH3 has a higher ph value
Answer: NH₃ has lower pH value than KOH at equal concentration because of its less basic nature.
Explanation:
NH₃ is a covalent compound and does not furnishes ions in a solution.
Its basic nature is due to the lone pair present on Nitrogen.
It can donate its lone pair to H⁺ ion and form NH₄⁺ (ammonium ion).
Its basic nature is because of ability to accept H⁺ ions.
On the other hand, KOH is a highly ionic compound.
It furnishes K⁺ and OH⁻ ions in solution very quickly.
KOH is a strong base as it readily gives OH⁻ ions.
Therefore, because of the less basic nature of NH₃ its pH is lower as compared to KOH when both are in equal concentration.
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