[mafiaparty303]

What does it mean when the concentration is : Concentration 12 Molar?

[Borek]

12 mol/L.

[mafiaparty303]

please explain? 12mol/L??? 12 mol of HCl in one liter of the stuff? How high concentration would that be in percentage?

[Borek]

http://www.chembuddy.com/?left=concentration&right=toc

[enahs]

please explain? 12mol/L??? 12 mol of HCl in one liter of the stuff? How high concentration would that be in percentage?

Really freakin high. Dangerously high.

If you do not know what molarity is you have no business playing with 12 molar HCl.

[Ψ×Ψ]

Somewhere around 37%.  This is "conc HCl."  You definitely don't want to play with it.  Accidentally getting a whiff of the fumes will burn your nasal passages pretty badly (and make everything smell like swimming pool for the rest of the day).

[mafiaparty303]

I know what molarity is, (12 molar...not that very descriptive when it dosnt even say per liter or something)... and ya funny thing is, I found this on a site for kid's chemistry thing! http://www.hometrainingtools.com/ thats the link, the prices are cheap I must say.

[Ψ×Ψ]

That's crazy!  At least it's only in a 30mL bottle.  You had me really scared for a minute there... 

[mafiaparty303]

ya haha so should it be safe for an amature chemist? I'm not totaly clueless about chemitry and chemical harm.

[mike]

12 molar...not that very descriptive when it dosnt even say per liter or something

Molar genreally means moles per litre (mol/L) so not really that ambiguous.

haha so should it be safe for an amature chemist?

Read the MSDS for HCl before using. This will tell you whether you are qualified to use it safely or not.

[billnotgatez]

mafiaparty303 -
It appears that the site you cite is geared for projects where there is direct adult supervision.

[woelen]

ya haha so should it be safe for an amature chemist? I'm not totaly clueless about chemitry and chemical harm.

Any chemical is safe for at least some amateur chemists. It is the amateur chemist, who determines whether a chemical is safe or not. Chemicals can be classified as
- idiot proof
- safe for all amateur chemists
- safe for some amateur chemists
- safe for only the most experiences and most careful amateur chemists
- not safe at all for any (amateur) chemist

Only very few chemicals belong to the first class and the last class.  I would put conc. HCl in the third group.

[mafiaparty303]

OK, thanks. I think i'll be fine then with the HCl if im careful with it. Which I will be.

[Ψ×Ψ]

Use a hood if you have one available, or work in a very, very well-ventilated area.  You SO don't want a sinus infection as a result of accidental HCl inhalation...
have fun!

[Yggdrasil]

When working with conc. HCl, always remember that the HCl molecules are volatile (of course, this should be readily apparent once you open the container and start smelling a strong acidic odor which seems like it could burn your nose hairs off).  So, always keep your HCl container tightly closed when it is not being used.  When your HCl container is open and you are pipetting solution out of it, I like to waft the vapors away from me by fanning my hand.  Also, be very cautious if you wear contact lenses (or better yet don't wear contact lenses when working with conc. HCl or any other volatile substance) as your contact lenses can adsorb some of the HCl vapors from the air.