k ap illy ard an , kav sh arlan m ag an u c h in i pastga qilib (n im a
u c h u n ? ) tu sh irin g . K olba o g 'z in i te rm o m e tr o 'rn a tilg a n
tiq in bilan b erk itin g . T e rm o m e trn in g sim obli qism i ko l-
b a n in g gaz c h iq a ru v ch i n a y id a n o zgina p a std a tu rsin .
S ovitgichni suv b ila n t o ‘ld irin g va b u tu n tajrib a davom ida
suv oqim in i sovitgichning pastki
qism idan yuqoriga qarab
y u bo rin g (n im a u c h u n ? ). A sbest t o ‘ri ustiga quyib gaz
go relkasida suvni q ay n ag u n ch a qizdiring. S uyuqlik n e c h a
gradusda qaynaganiga e ’tib o r bering. Yig‘gichdagi
dastlabki
5 — 10 m l h a y d a lg a n suv b ila n id ish n i c h a y ib , t o ‘kib
tashlang. Y ig‘gich d a 100— 120 ml suyuqlik to 'p la n g a n d a n
keyin, kolban i q izd irish n i t o ‘xtating. Y ig‘g ich ni asbobdan
a jratin g va undagi d istillan g an
suvdan soat oynasiga b ir
n ech a to m chi tom izing. G az gorelkasida b u g ‘lating. X uddi
s h u n d a y tajrib a n i v od o provo d suvi bilan ham tak ro rlan g .
B u g ‘la tis h n a tija la rin i ta q q o s la n g . S u v n in g to z a lig in i
kim yoviy usu ld a h a m tek sh irin g .
B uning u c h u n to z a
p ro b irk ag a h aydalg an suvdan 1—2 ml quying va u n g a b ir
n e c h a to m c h i a m m o n iy o k s a la t tu z in in g t o ‘y in g a n
e ritm a sid a n to m izin g . N im a k u zatilad i? X uddi sh u n d ay
tajribani vodoprovod suvi bilan ham bajaring.
B unda nim a
k u za tila d i? R eaksiya te n g la m a la rin i yozing va tegishli
x u lo salar ch iqaring .
10
SU BLIM A TLA SH
Y odni s u b lim a tla sh u s u lid a to za la sh .
Q attiq m o d d a q izdirilgan da suyuq holatga
o ‘tm a s d a n b ird a n ig a gaz h o la tig a o 'tis h i
ja ra y o n i
sublim a tla nish
d e y ila d i. B u n d an
ayrim q a ttiq m o d d a la m i q o ‘sh im ch alard an
to z a la s h d a fo y d a la n ila d i. (
Tajriba m o ‘rili
shkafda bajariladi.)
O d atd a,
yod tark ib id a
kam m iq do rda xlor va b ro m n in g birikm alari
b o ‘ladi. Y odni bu q o ‘shim chalardan tozalash
u ch u n sublim atsiya u sulidan foydalaniladi.
Past b o ‘yli, j o ‘m raksiz stakanga 0,5
g yod
k ristallaridan va 0,02 g kaliy yodid va 0,5 g
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