February 2, 2012
February 1, 2012
January 31, 2012
January 30, 2012
![jv-ong:
fyeahuniverse:
image by Flickr/Cyberchemist
The Tollen’s Reagent is used to determine whether a solution contains an aldehyde or a ketone.
Dilute sodium hydroxide is added to aqueous silver nitrate, this gives silver oxide, sodium nitrate and water.
2 AgNO3 (aq) + 2 NaOH (aq) → Ag2O (s) + 2 NaNO3 (aq) + H2O (l)
Then, aqueous ammonia is added to the solution until it goes clear. This is due to the now silver ions existing as [Ag(NH3)2]+ complexes.
Ag2O (s) + 4 NH3 (aq) + 2 NaNO3 (aq) + H2O (l) → 2 Ag(NH3)2NO3(aq) + 2 NaOH (aq)
The silver precipitates out onto the inside of the container, giving the notable silver mirror as seen above.
OMG TOLLEN’S REAGENT! I remember using this stuff as a sophomore](http://25.media.tumblr.com/tumblr_lxxje8HrGH1rn3wcfo1_400.jpg)
image by Flickr/Cyberchemist
The Tollen’s Reagent is used to determine whether a solution contains an aldehyde or a ketone.
Dilute sodium hydroxide is added to aqueous silver nitrate, this gives silver oxide, sodium nitrate and water.
2 AgNO3 (aq) + 2 NaOH (aq) → Ag2O (s) + 2 NaNO3 (aq) + H2O (l)
Then, aqueous ammonia is added to the solution until it goes clear. This is due to the now silver ions existing as [Ag(NH3)2]+ complexes.
Ag2O (s) + 4 NH3 (aq) + 2 NaNO3 (aq) + H2O (l) → 2 Ag(NH3)2NO3(aq) + 2 NaOH (aq)
The silver precipitates out onto the inside of the container, giving the notable silver mirror as seen above.
OMG TOLLEN’S REAGENT! I remember using this stuff as a sophomore
January 29, 2012
have posted this before I was going through old “likes” and it’s just so good.
:( </3
(Source: raspberrymilk)
its my fault. its my fault. its my fault. its my fault. its my fault. its my fault. its my fault. its my fault. everything is my fault.
Things I desire to do with all the cosplayer Laurants someday…..
