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Questions tagged [silver]

Silver is a metallic chemical element with the chemical symbol Ag (Latin: argentum) and atomic number 47.

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Two cells are connected in series. If x g of silver are deposited in cell 1, what volume of oxygen is given off in cell 2? [on hold]

I got the answer correct but I'm pretty sure my methodology was wrong. How would you solve such a question?
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0answers
41 views

Why do old black and white photos fade?

I understand why photos based on organic dyes would fade (discussed previously). But photos based on metallic silver fade as well such as like the one shown below. As a metal (a fairly stable one at ...
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58 views

Why was silver considered valuable in history? [closed]

Silver has been used for several millenia and (according to the german wikipedia page) was at some point even considered more valuable than gold. Today we know that it has the highest thermal ...
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2answers
69 views

High content of potassium reported by spectrometer in silverware items

We tried to analyze a few silver items (800/1000 fineness) using a hand-held ED-XRF spectrometer, which is normally used for analyzing industrial alloys etc. The operating element range of the device ...
3
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0answers
47 views

Electrolytic cell to remove soft solder from silver?

Hi my chemistry is pretty dire but have vague idea that an electrochemical cell could be used to remove soft solder (lead/tin probably) from a piece of sterling silver in need of a repair. The ...
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0answers
44 views

What is the lining of “Silver-lined” gloves actually made of?

I bought some rubber gloves that claim to be "Silver-lined". I think this is supposed to make the gloves easier to put on and take off. Is there an actual silver compound lining the gloves that ...
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1answer
28 views

Silver in defect chemistry

When talking about conductivity in combination with lattice defects you can often see that AgX is taken as an example for a Frenkel defect where the $\ce{Ag^+}$ moves to intersticial voids. I remember ...
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2answers
185 views

Reduction of hydrogen sulfide by silver

Why can $\ce{H2S}$ be reduced by $\ce{Ag}$ when left in air: $$\ce{2 Ag + H2S -> Ag2S + H2}$$ If silver is a noble metal that should not reduce hydrogen?
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1answer
241 views

Electroplating diamond grit

I want to do electroplating with diamond grit and make profiling, grinding and cutting disks. (see the attached photos) I want to know the process to make the machine or the company whom is selling ...
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0answers
67 views

Preventing silver tarnish with copper

I am examining methods for storing silver bullion (both .999 fine and 90% silver) in such a way that it does not tarnish and want you to evaluate a suggested solution. I know there are commercial ...
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2answers
2k views

Tape versus 1922 silver coin

I have a 1922 silver half dollar with scotch tape on it. The tape has been on it 50 years plus. It’s dried out and totally adhered to the coin. I’ve soaked it in lemon essential oil and googone but ...
9
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1answer
222 views

Does 95.8% silver tarnish as fast 92.5% silver?

I've been trying to find out whether 95.8% (Britannia silver) would tarnish as fast as 92.5% (Sterling silver)? I haven't been able to find much on tarnish for Britannia silver. Given that both ...
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2answers
204 views

Why does silver plating require undercoats of copper and nickel?

I came across a question that was about silver plating (of steel), but I couldn't help but wonder why the sequence was illustrated as this: step 1 A coating of copper is applied to the object. step ...
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1answer
131 views

Can sulphur from low-flying planes be cause of silver tarnishing rapidly?

My silver dishes, tea set, etc. that previously needed polishing once or twice a year are now turning black in just a few weeks. This area has low-flying planes. Could they be releasing sulphur which ...
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1answer
77 views

Which group is more suitable for metal nanoparticles functionalization? [closed]

I have synthesized bimetallic nanoparticles (gold core with a silver shell). I have two choices for functionalizing them, through thiol group or amine group. Which of them is more attracted to this ...
4
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1answer
137 views

Abundance of sulfur containing compounds in the air

I noticed a piece of jewelry has tarnished, so I looked up information about silver tarnishing. I read that this is due to the formation of silver sulfide on the surface of my necklace and that the ...
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2answers
3k views

What happens if hydrogen peroxide is added to silver oxides? [closed]

I have some powders that contain $\ce{Ag2O}$ and $\ce{AgO}$. What happens if I add $\ce{H2O2}$ and some water to these silver oxides?
3
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1answer
251 views

Separating a powdered mixture of Zinc Oxide and Silver Oxide

I have some powders that contain silver, $\ce{Ag2O, ZnO}$ and maybe some $\ce{AgO}$ Can I wash powders with $\ce{NaOH}$ to remove $\ce{ZnO}$ (as Sodium zincate) without any silver or silver oxides ...
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2answers
1k views

What is solubility of silver oxide in NaOH and KOH [closed]

What is solubility of silver oxides ($\ce{AgO}$ and $\ce{Ag2O}$) in $\ce{NaOH}$ and $\ce{KOH}$? How much of silver oxide can dissolve in 1 liter of $\ce{NaOH}$ or $\ce{KOH}$?
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1answer
36 views

Why add acid to rid of soluble carbonate or hydroxide impurities? Will it not also react with halide I'm testing for

When identifying metal halides with silver ions, the positive ion $\ce{Ag+}$ will form $\ce{AgX}$ with halide in a solution. However, $\ce{H+}$ is added (typically in the form of an acid like $\ce{...
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2answers
218 views

Finding sulfate contamination in crystallized silver nitrate

What is the best way to check for a small amount of sulfate contamination (if any) in silver nitrate? Usually, I would use dilute barium chloride to precipitate out the resulting insoluble white ...
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1answer
16k views

Electrolysis of AgNo3 [closed]

I have a solution of $\ce{AgNO_3}$ (is diluted with water). I electrolyse it. What products from at anode and cathode.
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1answer
561 views

Silver Nitrate Electrolysis

i have a solution of silver nitrate at 1M. the aim of my experiment is to determine in 40 mins, how much Ag will be deposited. Should i use copper or graphite electrodes.
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2answers
581 views

Are there compounds more conductive than Silver (Ag)?

Silver is the most electrically conductive element on the Periodic Table. However, I am interested in knowing if there are any compounds (combinations of elements) that would be more conductive than ...
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0answers
184 views

Mirror reaction - avoiding silver nitride

I am interested in experimenting with depositing silver on glass (mirror). I've read several papers and watched youtube videos but wish to be better informed about the risk of explosion. The mixture ...
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1answer
909 views

Can't silver have 61 neutrons? [closed]

What happens if silver does have 61 neutrons?
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1answer
183 views

Silver electroplating

In most of silver electroplating (or electrorefining) methods, it is mentioned that silver anode is oxidized in aqueous solution of silver nitrate, and that silver is deposited at the cathode (...
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1answer
68 views

Safe silver electroplating solutions

Are there any practical, sane and safe solutions that can be used for silver elctroplating/electrolysis that are purchasable? Objective is to create silver crystals, but without having evil cyanide ...
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1answer
741 views

why does silver chloride darken when exposed to electromagnetic radiation

All I know about this is that it does but I have no idea as to why and when I ask the only answer I get is "Because it does" which isn't helpful in the least. If I could get a good, well-said response,...
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2answers
2k views

Dissolve Silver Oxide

I was looking at how to dissolve silver oxide (in a solvent). I know that monovalent silver oxide will not dissolve in water, but are there any solutions in which monovalent silver oxide will dissolve?...
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1answer
422 views

Dissociation of silver chloride in a solution

When silver chloride is exposed to light it can dissociate to silver metal and atomic chlorine. It might be a silly question, but could the chlorine go back into the solution as chloride ions ? if so ...
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1answer
146 views

How to Dissolve AgNO3 in ZnAc Solution?

In the preparation of $\ce{Ag}$ doped $\ce{ZnO}$ thin films by sol-gel method, I dissolved zinc acetate in 2-propanol while adding DEA and the solution is ready. After that I added different ...
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1answer
3k views

Calculate the radius of an Ag atom

The question I have been given is: Silver atoms in a metallic lattice only fill up $88\,\%$ of the space ($12\,\%$ is empty). The density of silver is $10.5\ \mathrm{g\cdot cm^{-3}}$. Assuming that ...
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3answers
13k views

Why does silver sulfate not precipitate in this double displacement reaction?

Aqueous silver nitrate is mixed with aqueous sodium sulfate. We were asked to perform this reaction in lab in my chemistry class, and we did not observe a precipitant being formed. However, the ...
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1answer
6k views

Why do silver nitrate and sodium hydroxide react to produce silver(I) oxide?

I did an experiment in class combining the aqueous solutions of $\ce{AgNO3}$ and $\ce{NaOH}$. I predicted that $\ce{AgOH}$ would form but it didn't, instead a brown precipitate. I found out it was ...
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1answer
12k views

Yellow stains after cleaning silver

I've recently moved to a old house and found some stuff in the attic, along that I found some really beautiful silverware(??) that unfortunately was VERY tarnished, one of the pieces was totally black ...
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1answer
861 views

Cleaning silver - which method is better? [duplicate]

What is the advantage of this approach over polishing the silver with an abrasive? "Silver tarnish is an outer coating of silver sulfide, $\ce{Ag2S}$, formed when silver reacts with trace quantities ...
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1answer
205 views

Which sodium citrate is used in silver nanoparticles production?

In my studies, I have a group project to realise: to make some $\ce{Ag}$ nanoparticles using Turkevich method (boiling $\ce{AgNO3}$ with sodium citrate in water). In most of articles authors write ...
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2answers
581 views

How does the silver nucleate on glass in Tollen's reagent mirroring?

I'm trying to figure out how exactly does the silver start to grow during a mirroring with Tollen's reagent. I've made two pictures to illustrate how i see the nucleation/growth process of silver on ...
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0answers
850 views

Why does Silver form bonds with covalent character?

Compounds of silver form particularly strong bonds which is accounted for by the significant covalent character of the bonding. Furthermore, is the tendency to form covalent bonds linked to the fact ...
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1answer
1k views

Clean silver with aluminum foil and *

I already have two questions touching on this subject and there is a third question as well. The thing is that all the other question talk about cleaning silver with aluminum foil and carbonated ...
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1answer
2k views

What is the chemistry behind cleaning silverware with aluminium foil

This question has a accepted answer on this site already: What happens during cleaning silverware? but the reason I ask the question again is because I found different "recipes" for the technique ...
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1answer
2k views

Why does HCl both precipitate and dissolve Silver?

Adding $\ce{HCl}$ to silver nitrate solution causes silver chloride to precipitate. Adding more $\ce{HCl}$ causes the silver to re-dissolve. What is happening to the silver chloride when it re-...
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3answers
2k views

Are radioactive isotopes of silver dangerous?

I know we all think of things like uranium as being radioactive in the nasty radiation poisoning sort of way. But do elements like silver have similar effects in their radioactive isotopes? I'm an ...
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2answers
513 views

Extracting silver from Tollens test

When we add tollens reagent (diamminesilver(I) cation, $\ce{[Ag(NH3)2]+}$) to glucose it forms a silvery mirror on the walls of the container. Since the sides are coated with actual Silver, is there ...
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0answers
134 views

Height of potential barrier

Could anyone please help to find the height of the potential barrier between silver and copper or $\ce{Ag-Cu}$. I am working on a piezo-resistive sensor based on copper fabric and silver electrodes. I ...
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1answer
13k views

Which silver halide is the most soluble?

Halides are group 7 elements. They generally have a low melting and boiling point. They are highly reactive. Silver chloride and silver bromide are not soluble in water. So they will be precipitates. ...
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1answer
1k views

What happens during cleaning silverware?

I know two distinct recipes for cleaning silver: Put them into a pot with some club soda and a piece of aluminium foil and pour over a hot water. Gently clean silverware with a fine chalk powder (...
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2answers
1k views

Copper substituting silver in Tollen's reagent

I am an artist attempting to use Tollen's Reagent in a number of my projects. Is there any reason I could not substitute Copper Nitrate for the Silver Nitrate in the reaction? Would the copper ...
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2answers
15k views

Silver and milk (or milk products)

In the title I am refering to silver spoons, which, when used to consume milk products (like yogurt), get a weird taste. It could be described as umami/meaty, a little bit like onions. I came to the ...