@DrMario
I never called you insane. I asked if you were insane in a rhetorical manner. There's a big difference. And I only used such expression because you
described the behaviour of the teacher as scandalous. IMHO, his behaviour is far from being scandalous. What were you thinking of reporting anyway?
With that cleared out, let's continue.
5M Hydrochloric Acid isn't very corrosive. It only causes damage to the skin if the exposure is prolonged. Thus, the use of gloves isn't necessary.
Like I said, it is recomended by many labs not to use gloves when handling chemicals less or as corrosive and dangerous as HCl.
Now on the lab coat. It does indeed prevent you from getting HCl in your clothes. However, it's not strictly necessary. If you get some on your
clothes you can easily remove them before any real harm occurs. Of course, it's more pratical to remove a lab coat than your clothes, if splashes do
happen. However, it may be considered more pratical to work without a lab coat, when the danger is minimal. This depends on the opinion of the
chemist. So, my conclusion: lab coat, in this situation, is not mandatory.
It is important that children learn chemistry in a passionate way. They must learn that not everything that has acid in it melts your skin, for
instance. And that there's a difference between real corrosive acids and middly corrosive acids. And many more interesting things. There's a reason
why you use an helmet when riding a bike but don't use it when crossing the street. When crossing the street, there may be a chance that you get run
over, and the use of an helmet could save your life. Still you don't use one... The odds of something like that happening do not compensate the
trouble.
Now that we're done with the actual chemistry, allow me to pass to the next part. The personal side of all of this. Why on earth would you say that I
have strong opinions? Opinions that prevent me from having a "reasonable scientific conversation"? If you want to tell that to someone, please
advocate your own pleading and give some arguments.
If I insulted you when I asked if you were insane, I apologize. Now, If you want to debate the matter further, focus on the chemistry.
EDIT: I believe there's a substantial part of this thread missing, where DrMario said some ridiculous things about violenting someone. What happend to
my post about it?
[Edited on 27-12-2014 by HgDinis25] |