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Ch.16 - Aqueous Equilibria: Acids & Bases

Chapter 16, Problem 112

Write a balanced net ionic equation and the corresponding equilibrium equation for the reaction of the following weak bases with water. (c) Cyanide ion, CN

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Hey everyone, we're told that the azide ion is a weak base. What is the balance? Net ionic equation and K. Expression for the reaction of the azide ion with water 1st. Let's go ahead and ride out our equation. So we were told that we had our azide ion and this will react with water. Now when these two react, we end up with hydro's OIC acid plus our hydroxide ion. And this is because our side ion acts as a bronze ted Lowry base. So it becomes a proton except er which it receives from our water. Looking to see if this equation is balanced. We can see that it is balanced so we can go ahead and figure out our K. Expression. Now for our K expression, we know that this is going to be our products over our reactant. So we have our hydrochloric acid times our hydroxide ion. This will be divided by our azide ion and we won't include our water here since it is a liquid. And this will be our final answers. Now, I hope that made sense. And let us know if you have any questions