Ammonia appears in [TABLE 2-2 ] as both an acid and a conjugate b...

Question

Ammonia appears in [TABLE 2-2 ] as both an acid and a conjugate base. a. Explain how ammonia can act as both an acid and a base. Which of these roles does it commonly fill in aqueous solutions? b. Show how water can serve as both an acid and a base.

Accepted Answer

Hey friends, Let's do this problem. It says methyl amine. Ch three NH two is an organic nitrogenous compound. Right. Chemical equations showing how methyl amine acts as an acid and a base when in an aqueous solution, does methyl amine act as an acid or a base? Also write equations for how water acts as both an acid and a base. So we have to write five equations to showing how methyl amine is. Amfa Terek two for showing how water is in Fa Terek, which means it acts as an acid and a base and one for showing what happens when methyl amine is in an aqueous solution. So let's quickly review what it means to be an acid or base. So, if you're an acid, you're going to donate a proton or accept a lone pair. Right? If you're looking in terms of electrons and that will form a conjugate base and a base will accept a proton or donate a lone pair to form a conjugate acid. So, notice how bases have to donate a lone pair. So, if a compound has a lone pair, it's likely that it could act as a base. Right? So, let's look at metal mean, first acting as an acid. So it's going to donate a proton CH three NH 2 and we'll draw be for a general base when it donates a proton to the base, we have C H three N H minus as the conjugate base and H B plus as our conjugate acid. All right, now, when it acts as a base, it's going to accept a proton. So we have CH three NH two with, let's just write a proton. H plus. So we're just going to add that proton to the methyl amine to form CH three NH 3 plus. Alright, So now, before we go into the water, let's think about what happens when methyl amine is in an Aquarius solution. Well, in an Aquarius solution, we can draw CH three NH two reacting with let's say water. Right? That's what this means reacting in water and water is a weak acid. And methyl amine has that nitrogen which has a lone pair. So, since it has that lone pair, it's going to donate those electrons to take up a proton and act as a base. So if methyl amine is the base, it will donate the lone pair except the hydrogen. So we'll have CH three NH three plus and O H minus. Okay, so in an increased solution, it will act as a base. Okay, let's go on to water. So how does water act as an acid? Well, let's react it with a base. So we know methyl amine acts basic when it's in water. So we can just use that same equation again as our example. Okay, so water acting is an acid with methyl amine and oops acting as a base, let's put it with a strong acid. Right? So, since water is info Terek If we reacted with a strong acid that we know, could never be a base, then the water will definitely have to act as a base so we can react water with hcl hydrochloric acid to form H 30 plus as our conjugate base. Or sorry, conjugate acid of H 20 n c l minus. Okay, so those are all the reactions showing how methamphetamine and water. Our info Terek and this gives C to be the correct answer. That's it for this problem. I hope this video is helpful. And thanks for watching.

Ammonia appears in [TABLE 2-2 ] as both an acid and a conjugate base. a. Explain how ammonia can act as both an acid and a base. Which of these roles does it commonly fill in aqueous solutions? b. Show how water can serve as both an acid and a base.

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