Oxidizing Properties of Nitric acid

[iasedu]

Why is your NaOH liquid? It's supposed to be a white/wax-like solid or powder.

[dhwanitchem]

@iasedu Yes you are correct. NaOH is a white deliquescent solid , I prepared my solution by dissolving it in Distilled water.

[iasedu]

70% isn't concentrated! I make 93% at home!

[dhwanitchem]

@iasedu 70% Nitric acid is standard laboratory reagent concentration, any concentration above this leads to the formation of Fuming Nitric Acid which gives off NO2 and other harmful gases at room temperature.

[Feonix12]

@oceanofdarkstars probably not using a mask or fume hood to protect from nitrogen dioxide

[dhwanitchem]

@Feonix12 yes but my windows were open.

[laughomaniac]

@oceanofdarkstars i mean, i handle a 1 gallon jug of 18M H2SO4, without gloves. like a pro.

[dhwanitchem]

@oceanofdarkstars Nor do my teachers.

[spotlightman1234]

@MrLordbananna I don't think so! Copper is below hydrogen in the activity series.

[dhwanitchem]

@spotlightman1234 please go throught this ---> search nitric acid in wikipedia and read Oxidizing properties

[spotlightman1234]

@dhwanitchem i'm not saying that copper doesn't react with nitric acid of course i'm just saying that copper doesn't react with nitric acid to form hydrogen since it's below hydrogen in the activity series. So one would think that copper wouldn't react but nitric acid is such a strong oxidizer it oxidizes copper in to Cu+2 ions and reducing the nitrate ion in to nitrogen dioxide or under certain conditions it makes nitrogen monoxide.

[MrLordBanana]

Cu + 2 HNO3 =- Cu(NO3)2 + H2. Nitrogen oxydes are formed by the nitric acid, which decomposes because of the reaction heat!!!

[rufflesisastibs77]

You can do this mcuh easier and with less toxic fumes by using hydrchloric acid. [i know the soul purpose is to demonstrate but safety is better in the long run!] Anyway. Dissolve Potassium iodide in water and add conc. HCl then add some H2O2 and there you have your I2 [elemental iodine] . This reaction produces much less toxic fumes besides the fumes of the iodine sublimating. [little mind to those plumes of NO2 :P ]

[HazMatLabz]

I really liked some of the colors that were produced.

On that note, it's funny how Iodine can either be brown, black-ish, silver, or purple.

[ms9809]

wow no gloves

[dhwanitchem]

@ms9809 Doesn't matter.

[ms9809]

@dhwanitchem Never tell an EH&S guy gloves don't matter!!! You've just ruined my day!

[dhwanitchem]

@ms9809 Sorry for ruining your day! :-) Cheers!

[DumnduDeSilva]

gud guy....!

[GabeNiann]

Gloves man.. Gloves.

[GingleGangle1]

...so u put NaOH twice.))

[pyropakman]

Where do you get your Potassium Iodide?

[dhwanitchem]

I purchased my Potassium Iodide from a chemical supplier i do not know where you can find it? I think it can be available for purchase on the net since it is a non-hazardous chemical.

[pyropakman]

Thanks.

[1ukjunglednbraver]

ebay they sell it as radation ablets incase of nucler war..it stop u getting tyriod cancer

[Grundalizer]

@pyropakman Sea salt is high in it