kitkattt1246
21.02.2020 •
Chemistry
Equal volumes of 0.2 M ammonia and 0.2 M nitric acid, HNO₃, are mixed. Write the net ionic equation for the reaction and identify the aqueous species that have the highest concentrations at equilibrium. Justify your answer.
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Ответ:
The net ionic equation is
H₃O⁺+NH₃ ↔ NH₄⁺+H₂O
Explanation:
To write the net ionic equation, we are required to dissociate the into ions all strong acids and strong bases
Hence, nitric acid which is a strong acid is dissociated as follows
HNO₃+H₂O → H₃O⁺ + NO₃⁻
in the above equation, the nitrate ion NO₃⁻, is a spectator ion because it is only present and does not partake in the chemical reaction so it is left out of the net ionic equation equation
Also the it is required to keep together weak bases in the solution therefore for NH₃ which is a weak base we have
NH₃ + H₃O⁺ → NH₄⁺ + H₂O
Hence, the net ionic equation becomes
H₃O⁺ (aq) + NH₃ ↔ NH₄⁺(aq) + H₂O (l)
Ответ:
A mixture can vary in composition, but a pure substance cannot. think of salad dressing in a bottle and then think of pure water.