Indicate whether the following balanced equations involve oxidation–reduction. If they do, identify the elements that undergo changes in oxidation number. (a) 2 AgNO₃(aq) + CoCl₂(aq) → 2 AgCl(s) + Co(NO₃)₂(aq)

Video transcript

Hi everyone. So you were asked to identify if the balance reaction below is a redox reaction or not. And if applicable, indicate the elements that undergo oxidation number changes. We call that redox reactions include both. Oxidation and reduction. Oxidation is a loss of electrons and reduction is a gain of electrons. Now let's look at the reactant and products. Silver nitrate. Hey chris And this contains n. which is an ion. It has oxygen and this is not a peroxide or super oxide. The oxygen number is going to be negative two. For oxygen from nitrogen, What kind of negative one charge on the overall compound? He goes to the oxidation number for nitrogen Plus three times negative two An action we get plus five and they're for silver With overall charge of silver nitrate, which is zero is equal to the oxidation number of silver. That's negative one. Or in 03 super silver eight plus one. Let me have sodium chloride, solid sodium And there's a group one Who has a plus one oxidation number. Lorraine Is in Group seven. It was a negative one oxidation number episode of chloride has chlorine, Which is in group seven and has a negative one oxidation number, Silver Over charge of zero on the overall compound of silver chloride with the accession number of silver plus negative one for summer plus one. They're for sodium nitrate In 03 - which is an ion and it contains oxygen and this is not a peroxide or super oxide. Our session I'm just gonna be negative too. Then for nitrogen Have a negative one charge unnaturally ion able to the oxidation number of nitrogen Plus three times negative two Nitrogen we get plus five. Then we have sodium, What you say in group one And as a plus one oxidation number. So if we look at each silver, we're going from plus one plus one. There's no change. Corinne, we're going from negative one to negative one. So there's no change for nitrogen Going from plus five Plus five. So there's no change. And for sodium We're going from plus one Plus one. So there's no change here. So since no elements change its oxidation state, this is not a redox reaction. Thanks for watching my video and I hope it was helpful.