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Topic: HCl question  (Read 43899 times)

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Offline mafiaparty303

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HCl question
« on: February 11, 2007, 05:40:37 PM »
What does it mean when the concentration is : Concentration 12 Molar?
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Re: HCl question
« Reply #1 on: February 11, 2007, 06:15:36 PM »
12 mol/L.
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Offline mafiaparty303

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Re: HCl question
« Reply #2 on: February 11, 2007, 07:56:54 PM »
please explain? 12mol/L??? 12 mol of HCl in one liter of the stuff? How high concentration would that be in percentage?
« Last Edit: February 11, 2007, 08:12:19 PM by mafiaparty303 »
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Re: HCl question
« Reply #3 on: February 11, 2007, 08:15:46 PM »
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Offline enahs

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Re: HCl question
« Reply #4 on: February 11, 2007, 08:16:56 PM »
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.

Offline Ψ×Ψ

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Re: HCl question
« Reply #5 on: February 11, 2007, 08:51:53 PM »
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).

Offline mafiaparty303

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Re: HCl question
« Reply #6 on: February 11, 2007, 10:46:37 PM »
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.
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Re: HCl question
« Reply #7 on: February 11, 2007, 11:44:22 PM »
That's crazy!  At least it's only in a 30mL bottle.  You had me really scared for a minute there...  ;)

Offline mafiaparty303

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Re: HCl question
« Reply #8 on: February 11, 2007, 11:45:35 PM »
ya haha so should it be safe for an amature chemist? I'm not totaly clueless about chemitry and chemical harm.
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Offline mike

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Re: HCl question
« Reply #9 on: February 11, 2007, 11:54:19 PM »
Quote
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.

Quote
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.
There is no science without fancy, and no art without facts.

Offline billnotgatez

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Re: HCl question
« Reply #10 on: February 12, 2007, 12:53:53 AM »
mafiaparty303 -
It appears that the site you cite is geared for projects where there is direct adult supervision.


Offline woelen

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Re: HCl question
« Reply #11 on: February 12, 2007, 03:27:48 AM »
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.
Want to wonder? See http://www.oelen.net/science

Offline mafiaparty303

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Re: HCl question
« Reply #12 on: February 12, 2007, 10:37:12 AM »
OK, thanks. I think i'll be fine then with the HCl if im careful with it. Which I will be.
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Offline Ψ×Ψ

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Re: HCl question
« Reply #13 on: February 12, 2007, 10:42:08 AM »
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!

Offline Yggdrasil

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Re: HCl question
« Reply #14 on: February 12, 2007, 02:32:40 PM »
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.

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