Year 12 prac

Request or contribute your recipes here. You can also try doing a search, as there are some old recipe posts which have not or cannot be moved over to this forum.
tuesday
Posts: 95
Joined: 07 Apr 2009, 10:01
Job Title: Lab Tech
State/Location: ACT

Re: Tollens reagent

Post by tuesday » 17 Mar 2016, 14:22

That's fantastic, thank you

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Lyn
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Joined: 16 May 2006, 10:00
Job Title: Lab Assistant (Technician)
School: St. John's College
Suburb: Darwin
State/Location: NT

Re: Tollens reagent

Post by Lyn » 17 Mar 2016, 17:10

Please do a search for Tollens reagent on this site. There are two very good outlines for this prac. One by Jazz and another by Labbie. Step by step instructions with chemicals and procedure. I don't know how to link up your request with the information provided by these two.

tuesday
Posts: 95
Joined: 07 Apr 2009, 10:01
Job Title: Lab Tech
State/Location: ACT

Re: Tollens reagent

Post by tuesday » 18 Mar 2016, 10:47

Iv'e tried to do a search and the only thing that came up was how to dispose it. I'll try again

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Kathy
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Joined: 15 May 2006, 10:00
State/Location: QLD

Re: Tollens reagent

Post by Kathy » 18 Mar 2016, 11:20

Try searching for 'silver mirror'

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Lyn
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Joined: 16 May 2006, 10:00
Job Title: Lab Assistant (Technician)
School: St. John's College
Suburb: Darwin
State/Location: NT

Re: Tollens reagent

Post by Lyn » 18 Mar 2016, 12:02

The "silver mirror" will bring up Jazz's explanation and Re: Tollens reagent should bring up another by NTrivedi. Sorry, it wasn't Labbie's post, it was the post underneath that one.
Have just tried to follow my own directions and found that once you get the search page for Re:Tollens reagent for some reason you need to click onto Labbies post which then opens up to show the NTrevidi post. Where is that emoticon for tearing ones hair out in frustration. Has anyone else come up against this? Can anyone do a cut and paste to put them in the one spot? Please.

Purplehas
Posts: 2
Joined: 06 Nov 2018, 06:54
State/Location: NSW

silver mirror

Post by Purplehas » 19 Sep 2019, 13:00

Hi all,

Just wanted to know if doing the silver mirror experiment was a good idea with year 7s and year 9s? if so, what is the best best recipe?

Thanks in advance, \:D/

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Milo
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Joined: 31 Mar 2014, 10:16
State/Location: ACT

Re: Year 12 prac

Post by Milo » 23 Sep 2019, 09:52

Hi Purple, RiskAssess labels Tollens' reagent as an 11-12 only chemical, due to it being highly corrosive to skin and eyes, not to mention the potential for explosive byproducts. I would not let year 7 or 9 run this experiment, we've only ever done it with year 11.

As for a recipe, I've tried a few but usually have trouble getting it to work. Making Tollens' is finicky and requires good quality distilled water. The recipes on this forum mentioned above are a good place to start though.

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