tu tu n h o sil b o ‘lishi b ila n qizd irish n i t o ‘x tatin g va p ro b ir
ka n i gaz c h iq a ru v c h i n a y d a n a jra tib o lin g va d a rh o l
p r o b ir k a o g 'z in i b a rm o q b ila n b e rk itin g . P ro b irk a n i
t o ‘n k arib avvaldan tay y o rlan g a n k o ‘k lakm us eritm asiga
b o tirin g va suv o s tid a b a rm o g ‘in g iz n i o lin g . N im a n i
k u zatd in g iz? N im a u c h u n p ro b irk ad ag i
suvning sath i tez
k o ‘tariladi? Lakm us rangining o ‘zgarishini belgilang. Asbob
rasm in i chizing. K u zatilg an h o d isan i yozing. V o d o ro d
x lo rid o lis h re a k siy a si te n g la m a s in i y o z in g . L a k m u s
ran g in in g o 'z g a rish in i n im a b ila n tu sh u n tirish m um kin?
U c h ta
p ro b irk a o lib , u larn in g b iriga n a triy x lorid,
ik k in c h is ig a n a triy b ro m id , u c h in c h is ig a kaliy y o d id
e ritm a la rid a n 3—4 to m c h id a n tom izing. U larn in g h a r b i
riga k u m u sh
n itra t e ritm a sid a n , k u m u sh galogenidlarga
xos c h o 'k m a hosil b o ‘lg u n c h a 1—2 to m c h i to m izin g .
C h o ‘km an in g - ran g in i belgilang, tegishli reak siy alarning
m o le k u ly a r va io n li te n g la m a la rin i yozing.
Xlorli ohakning olinishi (T a jrib a тЫЩШ Щ ка/йа olib
b o rila d i).
H ajm i 50— 100 ml b o 'lg a n silirfflti^a^ 2 g to za
s o ‘n d irilg a n oh^fc? (kalsiy g id ro k sid i) solib, ustiga 10— 15
ml d istilla n g a n suv q u y in g v a 's h is h a
ta y o q c h a b ila n
yaxshilab aralash tirin g . H osil b o 'lg a n a ralash m an i m uzli
suvda sovitib (nim a u ch u n ?), unga 10—20 m inut davom ida
v o d o ro d x lo rid d a n to za lan g a n xlor yuboring. (Bu qan day
q ilin ad i? ) R eaksiya ten g la m a sin i yozing.
a)
o lin g a n m a h s u lo tn in g b ir q ism ig a 10
m l suv
c |^ |^ |g va erim ay qolgan c h o 'k m a d a n filtrlang. O lingan
eriti®№ ing indigo eritm asiga va biror rangli m atoga ta ’sirini
sinab k o ‘ring. K uzatilgan h o d isalarn i izohlang:
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