On Mon, 12 Oct 2009 06:53:31 +0300, eSSas wrote:

> padugne rašė:
>>> O sakei, kad cjhemijos nemoki.
>> 
>> O tai ce skaitosi kad moku? Bo jei kazka mokeciau, tai bandyciau pezet
>> apie jodo junginiu itaka (t.y. trukdyma) aliuminio pavirsiaus
>> pasyvavimo procesui, beigi galbut pagalba kokios nors idomesnes
>> rugsties susidarymui (dalyvaujant atmosferoje esantiems garams).
> 
> Tiek aliuminis, tiek jodas - abu beviltiski, kai kalbam apie rugstis.
> Apie sarmus, beje - irgi.
> 
> Visas biznis baigiasi neatskiriamu aliuminio oksido, hidroksido ir
> jodido misiniu

http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA1/R1MAIN/CD1R1260.HTM#1270

==============================
These reactions also serve to show that aluminium is in fact a more 
reactive metal than it appears in everyday use. The protective oxide 
layer of aluminium has to be penetrated by the halogens before the 
reactions can start, hence the delays, and the need for water to assist 
the two solid elements getting into contact, in the case of aluminium and 
iodine.

The clouds of iodine vapour released when aluminium and iodine react can 
stain the inside of a fume cupboard. Teachers may prefer to demonstrate 
this reaction outdoors, if possible.

The anhydrous aluminium halides are vigorously hydrolysed (sometimes 
violently if freshly prepared and hot, as here) by water, giving off 
fumes of a hydrogen halide and a forming an acidic solution of the 
aluminium salt.
==============================

Tiesiog uzberus ant zvakiu taip ql nesigautu. Bet as kaip nieko 
nesuprantantis chemijoje kazkaip naiviai perskaiciau, kad visokios 
rugstys rezultate vistik susidaro.

Bet cia zinai, tai suktas mokslas sugebantis isdurt net ir matematika.

-- 
Kittehs u must haz prioriteez! 
U no giv cheezburger 2 Ceiling Cat, an what has it earneded U? 
U makeded cookies but u could not eated thems, for they was burned.