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is it safe to have ice in drinks

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is it safe to have ice in drinks


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Message posted by Ritchie on 27 July 2007 at 3:13pm - IP Logged Legal Disclaimer Corfu Photos
Ritchie
Quote: Originally posted by seaangler on 25 July 2007
Quote: Originally posted by ocay on 25 July 2007
In the U.K. I used distilled water to show classes that absolutely pure water does not conduct electricity.   We added little doses of salt to induce conductivity. Once a boy asked, "How about tap water? We drink it, don't we?"
We tried the experiment using water from the tap. The ammeter exploded and the whole school was plunged into darkness through the main fuse blowing.   No comment!   I have lived on Corfu for thirteen years using tap water for cleaning teeth, cooking, washing vegetables and fruit, making tea and coffee, ice for drinks, and am a rather fit eighty-year-old.

....Pure distilled water is none conductable you say..Would you stand in it and turn 240 volts on...(Not on your life)...the one thing that you do not do is mix water with electricity...Distilled or not....I can asure you...

Of course aldernary tap water contains minerals salts and irons....We use it for breweing hear in the midlands....Chris


I wouldn't want to try it either!!  I think the term is "ions" - it is the ions in the water that conduct.  In distilled water, with minimum ions, the potential of the circuit is much less  - but the water is bound to have some conductive impurities - unless under extreme lab conditions. I still wouldn't want to do it though, lol.

We have cooked and drunk (in small quantities) the water in Corfu without any problems.



Message posted by ocay on 28 July 2007 at 6:27pm - IP Logged Legal Disclaimer Corfu Photos
ocay
Corfu
Hello Chris and Ritchie,

I understand your reservations but assure you that under laboratory conditions pure water, i.e. distilled water, is completely non-conductive.   The ammeter does not even flicker when mains current is switched on.   It always intrigues the pupils!
However I am surprised that cutlery does not dissolve in the cocktail of salts and additives contained in U.K. tap water.   In Corfu the water contains only salts collected in its passage through the earth.

              

Message posted by Ritchie on 29 July 2007 at 11:01pm - IP Logged Legal Disclaimer Corfu Photos
Ritchie
Quote: Originally posted by ocay on 28 July 2007
Hello Chris and Ritchie,

I understand your reservations but assure you that under laboratory conditions pure water, i.e. distilled water, is completely non-conductive.   The ammeter does not even flicker when mains current is switched on.   It always intrigues the pupils!
However I am surprised that cutlery does not dissolve in the cocktail of salts and additives contained in U.K. tap water.   In Corfu the water contains only salts collected in its passage through the earth.
Bit off subject now I suppose, but an intriguing thought - why do we use distilled water as an electrolyte in batteries if it's non-conductive?


              

Message posted by seaangler (Chat Room Administrator) on 30 July 2007 at 12:13am - IP Logged Legal Disclaimer Corfu Photos
seaangler
...Never thought of that ..Perhaps its not to fer up the battery..Like an electric kettle i supose.Or..(salts in a battery are not a good thing is it)Gives of a dangerous gas i believe......Chris

Message posted by VeryNiceMan on 30 July 2007 at 2:59am - IP Logged Legal Disclaimer Corfu Photos
VeryNiceMan
Corfu

The electrolyte (sulphuric acid diluted with distilled water) in a lead/acid battery is not there to conduct electricity.  It's function is to produce a chemical reaction with the lead plates in the battery to produce electricity.

Distilled water is used because the minerals in tap water would increase the speed at which the lead plates become covered with lead sulphate which would prevent the chemical reaction taking place. (the acid has to be in contact with lead not lead sulphate)

The dangerous gas seaangler refers to is hydrogen and hydrogen sulphide which is a natural product of the charging process of a lead/acid battery.

Here endeth the first chemistry lesson.

Dave.

 


Message posted by ocay on 30 July 2007 at 7:44pm - IP Logged Legal Disclaimer Corfu Photos
ocay
Corfu
Nicely done, Dave!

Message posted by DAVID1 on 31 July 2007 at 12:38am - IP Logged Legal Disclaimer Corfu Photos
DAVID1

Dave,

Are you the brainiest man in Kavos?!!

David


Message posted by VeryNiceMan on 31 July 2007 at 12:52pm - IP Logged Legal Disclaimer Corfu Photos
VeryNiceMan
Corfu

I wouldn't say that David, but working for the AA for 20 years did teach me a thing or two about car batteries,  including on a few occasions how easily they explode and spray sulphuric acid everywhere.

Dave.


Message posted by Kath Brian on 31 July 2007 at 1:53pm - IP Logged Legal Disclaimer Corfu Photos
Kath Brian
Corfu

What a clever bunch you are - I am very impressed!

Kath


Message posted by Ritchie on 01 August 2007 at 9:25pm - IP Logged Legal Disclaimer Corfu Photos
Ritchie
Dave - I knew that!!  (hangs head in shame lol)




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