dann2
International Hazard
Posts: 1523
Registered: 31-1-2007
Member Is Offline
Mood: No Mood
|
|
Chloride probe
Hello,
Was wondering if it would be diffucult to make a probe to measure Chloride concentration in a Chlorate cell.
I pulled the following from Google.
___________________________________________
Reference Cell Construction
You can make your own Ag/AgCl reference electrode. Polish apiece of Ag
wire, approximately 2 inches long, with steel wool until the surface
is shiny. Attach this wire to the positive terminal of a 9 V battery.
To the negative terminal, attach a short pieceof Pt wire. Place the
two electrodes in 3 M HCl for about 30 seconds. The silver wire is now
coated with AgCl. Place the coated wire into a short piece of glass
tubing. Insert a short string (wetted with saturated KCl solution)
partially into the tubing and place a small cork intothe end. Place a
small o-ring around the tubing and fill the tubing with saturated KCl.
___________________________________________
Will this probe give an indication of Chloride concentration if
attached to a very high impedence volt meter.
It would have to ignore Chlorate.
Dann2
|
|
|
G.i.B.
Harmless
Posts: 22
Registered: 17-5-2007
Location: amsterdam
Member Is Offline
Mood: confused but happy
|
|
I do believe, that this is the basic design for an Ag/AgCl reference electrode, but wether it is going to work, when you make one yourself ?? Can't
you precipitate the Cl- with AgNo3 and calculate the amount ?
|
|
|
dann2
International Hazard
Posts: 1523
Registered: 31-1-2007
Member Is Offline
Mood: No Mood
|
|
Hello,
It would be very convenient if I had a probe to monitor the Chloride.
I only have a small amount of Silver Nitrate.
Wonder would it be possible to make a range of Chloride solutions (say 0.5% to 20%) in steps of 1 percent or so.
You could then eyeball the ppt amount in your unknown with the ppt in the known.
It is a pain to ppt Chloride, extract and weigh. You need a scale to 1/100 gram (or better) if you are going to use small amounts of Ag.
Is Silver Chlorate soluble?
I know Silver Perchlorate is very soluble.
Dann2
|
|
|
G.i.B.
Harmless
Posts: 22
Registered: 17-5-2007
Location: amsterdam
Member Is Offline
Mood: confused but happy
|
|
silver chlorate sol. : 20 gram/100ml at 27 degr. C. Silver chloride1.93mg /L. The difference is extremely workable. I think you need a scale of 0.01
gram accuracy, but a 0.1 scale might be enough if you use a lage amount and just need an indication. (If eyeballing is good enough for you !?!)
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
