 Okay, so let's go ahead and try this so guys and gals why don't you look up here why don't we try this type of reaction where we're looking at first off what is the products of this equation this reaction equation that we're going to and in doing that we will write the molecular equation and then from there we're going to write the total ionic equation so this is one of these gas forming reactions so if you have your textbook it might be useful to open up to the reaction section while you're looking at this looking at me solve this and look at the gas forming reactions themselves okay so you're going to need to what do you say get it into your head which ionic compounds will make gases when they react with an acid okay and sodium carbonate is one of these comments okay so just make sure when you see sodium carbonate and see that it's reacting with an acid you realize okay that's going to be a gas forming reaction okay and we see sodium carbonate and we have talked about one of the products of a gas forming reaction so do you carbonate what gas do you think so do you carbonate carbon dioxide and you'll see this we're doing this reaction today you'll see bubbles form okay and you'll see that those bubbles will actually be carbon dioxide but anyways so we know carbon dioxide is going to be one of our products everybody okay with what I'm saying okay so if you want to might be useful to write that down right now and we know it's a gas so I'm going to put it in to the gaseous state we also know that sodium and cl chlorine chloride right those are spectator ions that aren't going to react but we're going to pair them in the molecular equation so you probably remember that from my doing sodium hydroxide and hydrochloric acid that reaction okay so we can write that down and that's going to be aqueous of course because we know that sodium chloride is soluble because we know our solubility chart by now okay we don't know our solubility chart that's something we need to memorize remember we talked about memorizing the solubility okay so go back in look at the solubility chart in your book memorize it it'll be very helpful for you going forward okay so we could start balancing this to figure out what else we have left that we're going to need but what do we got we got ages and ohs right so what was going to the what was going to be the other molecule that we're going to be formed H2O and that's going to be a liquid actual okay so now what do we have to do balance the equation right okay so do you see that we're not balanced right because we got two sodium here but only one here so we put two there two chlorines well we're gonna have to put two there okay so ages we got two two ohs we got one two three one two three C's we got one and A's we got two C L's we got two are we balanced okay so this is the balanced molecular equation okay this is this is the first time you're seeing a gas forming equation this will be called molecular equation so what else do we want to figure out the total ionic equation and the net ionic equation so you guys remember what do we do to all the substances that have H2O's in their ion yes the different species into their ions okay so is it in a to is that how we write it no we take this to and put it as a coefficient right and it's not just in a it's like what you said Harlan right it's an ion so it's going to be in a one plus like that everybody okay with what I've just done we're going to put an AQ behind it we cool okay and then we still have the CO3 right the carbonate so CO3 that's a polyatomic ion that we know right so what's the charge again two minus you should know that from the animes two chapters ago since we're recording I won't give you too hard of a time okay but it's a queue and then we have a queue behind the HCl right so we're going to do the same thing but this coefficient that applies to both the H and the CL remind remember that okay so H plus since it's an acid we can do this remember strong acids they break up when we put them into water to their constituent ions plus how many CL minuses to that takes up a lot more space NACL aqueous so what are we going to do break them up right and CL minus aqueous in H2O is a liquid so what do we do with that are we going to break it up I was concerned about the H2O we don't break up and the CO2 we also don't break up call this the total ionic equation or TIE okay and the net ionic equation we just if we see something that's on one side of the reaction and it's on the same as on the other side of the reaction we just cancel them both out okay so you see here 2N8 plus aqueous do we see that on the other side of the reaction so we can just cancel that out CO32 minus aqueous do we see that on the other side of the reaction CO32 minus aqueous no so can we cancel it out no H plus or 2H plus do we see that on the other side no can we cancel it out no 2Cl minuses yes we can cancel those out and there's our net ionic equation we just bring everything down that we didn't cancel out okay so what do we got CO32 minus aqueous plus 2H plus aqueous and that's it from the reactant side and what do we have over here H2O liquid plus what CO2 yes that we call the net ionic equation okay so again right hopefully you see CO2 there that's the gas that we're talking about in the gas any questions on this one okay good good job guys