Oh "shit" .. Silver Nitrate :( (1 Viewer)

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This is what happens when Silver Nitrate (AgNO₃) comes into contact with your skin.



After performing a redox displacement reaction, I had to rinse out the test tubes, unfortuately, the high-pressure science lab taps splashed some onto my fingers.
Even though some Silver Nitrate had been reduced by Copper, the effects can be blemishing, although it is only on my fingers





More details of the practical.

Test tube # 1 - Piece of Magnesium and Silver Nitrate (AgNO₃) solution

Mg²⁺ + 2e^- --> Mg_(s) -2.36V
2Ag⁺ + 2e^- --> 2Ag_(s) 0.80V

Magnesium (forgot to change copper to magnesium) oxidises in the presence of silver ions.

Mg_(s) --> Mg²⁺ + 2e^- +2.36V

Redox reaction:

Mg_(s) + 2Ag⁺ --> Mg²⁺ + 2Ag_(s)




Test tube # 2 - Piece of Copper and Silver Nitrate (AgNO₃) solution

Cu²⁺ + 2e^- --> Cu_(s) 0.52V
2Ag⁺ + 2e^- --> 2Ag_(s) 0.80V

Copper oxidises in the presence of silver ions.

Cu_(s) --> Cu²⁺ + 2e^- -0.52V

Redox reaction:

Cu_(s) + 2Ag⁺ --> Cu²⁺ + 2Ag_(s)

 

[idling fire]

Hmm yeah silver nitrate stains are annoying.

The two prelim chem classes at my school did a prac test to test metal reactivity and one of the salts was silver nitrate. Amusingly, no one in my class ended up stained, in comparison to the other class with a majority of casualties. =D

Normally fades in a week or two, but some of them had a whole black finger! hehehe

For a prac test though... they should've taken marks off for poor experimental safety.

 

[Forbidden.]

Hmm yeah silver nitrate stains are annoying.

The two prelim chem classes at my school did a prac test to test metal reactivity and one of the salts was silver nitrate. Amusingly, no one in my class ended up stained, in comparison to the other class with a majority of casualties. =D

Normally fades in a week or two, but some of them had a whole black finger! hehehe

For a prac test though... they should've taken marks off for poor experimental safety.

The silver nitrate on my skin is now completely faded, but the one on my nail is still there ...