chemistry

Silver acetate

Silver acetate is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Silver acetate rather than just read about it. In short: Silver acetate is a coordination compound with the empirical formula CH3CO2Ag (or AgC2H3O2). A photosensitive, white, crystalline solid, it is a useful reagent in the laboratory as a source of silver ions lacking an oxidizing anion.

Key takeaways

Silver acetate belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Silver acetate to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Silver acetate from memory before moving on to harder problems.

Reference excerpt

Silver acetate is a coordination compound with the empirical formula CH3CO2Ag (or AgC2H3O2). A photosensitive, white, crystalline solid, it is a useful reagent in the laboratory as a source of silver ions lacking an oxidizing anion.

Synthesis and structure Silver acetate can be synthesized by the reaction of acetic acid and silver carbonate.

2 CH3CO2H + Ag2CO3 → 2 AgO2CCH3 + H2O + CO2 Solid silver acetate precipitates upon concentration of solutions of silver nitrate and sodium acetate. The structure of silver acetate consists of 8-membered Ag2O4C2 rings formed by a pair of acetate ligands bridging a pair of silver centres.

Reactions Silver acetate finds use in certain transformations in organic synthesis.

Sulfenamide synthesis Silver acetate is used to prepare sulfenamides from disulfides and secondary amines:

R2NH + AgOAc + (RS)2 → R2NSR + AgSR + HOAc

Hydrogenation A solution of silver acetate in pyridine absorbs hydrogen, producing metallic silver:

2 CH3CO2Ag + H2 → 2 Ag + 2 CH3CO2H

Direct ortho-arylation Silver acetate is a reagent for direct ortho-arylation (to install two adjacent substituents on an aromatic ring) of benzylamines and N-methylbenzylamines. The reaction is palladium-catalyzed and requires a slight excess of silver acetate. This reaction is shorter than previous ortho-arylation methods.

Oxidative dehalogenation Silver acetate can be used to convert certain organohalogen compounds into alcohols. It may be used, in spite of its high cost, in instances where a mild and selective reagent is desired.

Woodward cis-hydroxylation Silver acetate in combination with iodine forms the basis of the Woodward cis-hydroxylation. This reaction selectively converts an alkene into a cis-diol.

Uses In the health field, silver acetate-containing products have been used in gum, spray, and lozenges to deter smokers from smoking. The silver in these products, when mixed with smoke, creates an unpleasant metallic taste, thus deterring them from smoking. Lozenges containing 2.5 mg of silver acetate showed "modest efficacy" on 500 adult smokers tested over a three-month period. However, over a period of 12 months, prevention failed. In 1974, silver acetate was first introduced in Europe as an over-the-counter smoking-deterrent lozenge (Repaton) and then three years later as a chewing gum (Tabmint). Silver acetate is also a well known precursor used in printed electronics. Particularly, complexes of silver acetate have been reported to form particle free "reactive inks" that form traces that approach bulk silver conductivity (within one order of magnitude).

Safety The LD50 of silver acetate in mice is 36.7 mg/kg. Low doses of silver acetate in mice produced hyper-excitability, ataxia, central nervous system depression, labored breathing, and even death. The U.S. FDA recommends that silver acetate intake be limited to 756 mg over a short period of time; excessive intake may cause argyria.

References

Further reading F. H. MacDougall & S. Peterson (1947). "Equilibria in Silver Acetate Solutions". The Journal of Physical Chemistry. 51 (6): 1346–1361. doi:10.1021/j150456a009. PMID 20269041.

Illustrations

Worked examples

Example 1 — a first encounter with Silver acetate

Start with the simplest possible case. Write down what Silver acetate claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Silver acetate before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Silver acetate ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Silver acetate

In research: Silver acetate appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Silver acetate in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Silver acetate is common in secondary-school and first-year university syllabi. It links to neighbouring topics Acetates, Chemical compounds containing metal–metal bonds, Dimers (chemistry), so understanding it makes those chapters shorter.
In everyday life: Look for Silver acetate outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Silver acetate in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Silver acetate means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Silver acetate out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Silver acetate in simple terms?

Why does Silver acetate matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Silver acetate?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Silver acetate.