Investigating a metallic element

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Marama T
Posts: 96
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: Emmanuel Anglican College
Suburb: Ballina
State/Location: NSW

Investigating a metallic element

Post by Marama T »

Investigating a metallic element Pearson 10 p. 127 The teacher thinks the agar should be clear after addition of the AgNO3, but ours is going a purple gray colour. Anyone know about this?
bigmack
Posts: 564
Joined: 15 Dec 2015, 10:49
Job Title: Lab Assistant
State/Location: NSW

Re: Investigating a metallic element

Post by bigmack »

Did you use distilled water to make the Agar . If you used Tap water , could be Chlorine reacting with the Silver Nitrate .

EDIT: I have not done that Prac myself , was just a thought .
Last edited by bigmack on 20 Jul 2021, 13:38, edited 1 time in total.
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Labbie
Posts: 3058
Joined: 28 Nov 2006, 10:00
Job Title: Retired
Suburb: At Home
State/Location: NSW

Re: Investigating a metallic element

Post by Labbie »

Well done Bigmack
Regards Labbie

Lab Manager/Lab Tech, mind reading etc etc
Now retired :wub:
Marama T
Posts: 96
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: Emmanuel Anglican College
Suburb: Ballina
State/Location: NSW

Re: Investigating a metallic element

Post by Marama T »

I put out distilled water, but I'll check with the teacher. Thanks for your time.
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