The hydrated cation M1H2O26 3 + has Ka = 10-4, and the acid HA has Ka = 10-5. Identify the principal reaction in an aqueous solution of each of the following salts, and classify each solution as acidic, basic, or neutral. (a) NaA

Video transcript

well. Every once in this video we're given two K values here and here, we're being asked to write the predominant reaction that occurs in a quick solution when K X. Is added to the solution, classify the resulting solution as acidic, basic or neutral. So the reaction that occurs here is that we have K. X. That comes from the K plus and x minus. We have a cannon and an ion. So from our cave plus here We have a plus one charge main group metal. And this metal here is neutral, a neutral ion. And then for x minus an eye on this comes from a weak acid which is H. X. And this has a low K. A value, which means that we have a basic an ion. So then our predominant chemical reaction here is that we have our x minus which is of course acquis that reacts with one mole of H 20 in its liquid state. And this is an equilibrium with our H. X. So our weak acid which is acquis and r O H an ion. Again. This solution then is because we have a neutral ion and a basic an ion. So this is neutral, it's kind of like we have zero here and basic kind of just overpowers this neutral ion. So overall we do have a basic solution. Alright, so this right here is going to be my final answer for this problem