It is C. Cations have positive charge. They get a positive charge when they lose an electron in their outer shell
Answer:
pH = 3.347
NO₂⁻ + H₃O⁺ → HNO₂
Explanation:
If the buffer is made with 0.417M of HNO₂ and 0.417M of NaNO₂ the pH of the solution is = pKa. <em>A buffer which concentration of weak acid and conjugate base is the same has a pH = pKa</em>
As Ka of the solution is 4.50x10⁻⁴, pKa is -log 4.50x10⁻⁴ = 3.347. Thus,<em> pH = 3.347</em>
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The net ionic equation that occurs when 0.120 mol of HCl is added to 1.00L of the solution is:
<em>NO₂⁻ + H₃O⁺ → HNO₂ + H₂O</em>
<em>The conjugate base (NaNO₂) reacts with strong acid (HCl, source of H₃O⁺) producing weak acid (HNO₂) and water. If a strong base is added, the weak acid reacts producing conjugate base and water.</em>
Answer:
volume = mass/density
Here, volume = 80g/1.59gcm-3 → 50.314 cm3
Explanation:
Hello, Brainly User!
A heterogeneous equilibrium reaction is when there are different phases in the reaction. An equilibrium reaction is a reaction that can go in both the forward and reverse directions, and the concentrations of the reactants and products remain the same.
So therefore, your answer is A. Heterogeneous!
Hope i helped and i was honored to answer your question!
Have a great day..
-Philaeagles14
