think about the reaction of $ceAgNO3$ and also $ceHCl$. I check out that silver- chloride would be formed. But $ceH > ceAg$ in reactivity, climate how might $ceAg$ displace $ceH$ indigenous $ceHCl$ ?

If there to be a reaction, $ceAgCl$ and also $ceHNO3$ to be to form. But then these would certainly react again to provide us the initial compounds back. The actual question was to write down the reaction in between $ceAgNO3$ and also $ceHCl$. Ns (wrongly) realized the the link wouldn"t react due to the fact that of the reasons stated.

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Gaurang Tandon
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One that the most complicated parts of is learning to identify a form of reaction based specifically on the reactants. This needs to be done before you can apply a reaction pattern to the problem, and also so that is crucial to get this step appropriate in the beginning.

In this case, you room looking at the reaction:

$$ceAgNO3 + HCl -> AgCl + HNO3$$

You currently know the products, but are questioning exactly how these assets can be formed since the task of H is better than Ag, implying the Ag is simpler to oxidize than H. This is true - but take a look at the oxidation number of each species in this reaction:

$ceAg: +1 -> +1$

$ceNO3: -1 -> -1$

$ceH: +1 -> +1$

$ceCl: -1 -> -1$

Since there is no as whole transfer of electrons, this can"t it is in a redox reaction, and also that method activities won"t matter here.

That means there need to be one more driving pressure for this reaction - another reaction pattern the fits better.

I don"t want to offer you the price directly, yet I will provide you part advice that need to help:

Write the complete equation - including the phases.

$$ceAgNO3(aq) + HCl(aq) -> AgCl(s) + HNO3(aq)$$

See if you deserve to find another reaction pattern the fits this equation better. Later, I"ll upgrade this answer to show how you deserve to identify the exactly pattern because that aqueous reaction using only the reactants.


As ns mentioned, among the hardest components of is learning to determine reaction fads based only on the reactants. This is a double-displacement (or metathesis, or precipitation) reaction. That is basic to check out now, offered that the reactants are aqueous and also at the very least one of the products is heavy (the precipitate). Formation of the heavy is the driving force for this reaction - the rapid explanation is the the forces attracting silver and chloride ions together room stronger 보다 the solvation forces in between those ions and water, and the pressures holding them to sodium and also nitrate ions.

This is good, but how execute we predict the this is a precipitation reaction ahead of time?

The key is to have actually a great understanding of the three common varieties of salt/acid/base reactions that occur in aqueous solution, and to learn to recognize ideas in the reactants.

Briefly, the three species that are most commonly seen are:

PrecipitationAcid/base (Arrhenius definition)Redox (single displacement)

You deserve to recognize every of these by the reactants if you know what to look for.

Precipitation - 2 soluble salt (ionic compounds), or a salt through an acid or base.

Acid/base - one Arrhenius mountain and basic (compound comprise hydroxide)

Redox - a salt or acid and also an element metal

There are plenty of other species of reactions that occur in aqueous solution, and many sports of the acid/base and redox category, however these three cover the cases most commonly seen in a classroom.

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Once friend have determined the most likely pattern the the reaction will certainly follow, the next step is to predict the commodities using that pattern to view if they make sense. If they do, then you have likely favored correctly.

You can use this algorithm for more advanced too - in necessary, because that example, one of the major goals is to find out to suspect reactions based upon functional groups. When you can identify sensible groups and have memorized reaction fads for them, it becomes possible to guess a huge range of reactions.