: , d- .
: , , , .
: ZnSO4, NaOH, NH4OH, CuSO4, , , , ( ), FeSO4, FeCl3, K3[Fe(CN)6], K4[Fe(CN)6], KCNS ( NH4CNS), , 3, , Na2CO3, KnO4, H2SO4, K2Cr2O7, , AgNO3, NaCl ( 1), Na2S2O3, ().
: , , .
1. - -
40 , . .
. 1-2 , NaOH NH4OH (10%) . , NaOH, NH4OH. Zn(O)2 - .
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:
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C : Zn2+ ? Zn2+ ?
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2. .
. 25 . -NH2, -OH, -SH . , , (, ), ().
. 3-4 2%- CuSO4, NaOH . . NH4OH, 1%- . Cu()2 .
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:
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: ( u2+? . ).
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3. .
|
|
5 Fe+2 Fe+3 . K4[Fe(CN)6] K3[Fe(CN)6], . Fe+2 Fe+3 .
.
) 2-3 FeSO4, (III) - K3[Fe(CN)6]. , .
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: ( )
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) 2-3 Fe13, (II) K4[Fe(CN)6]. , .
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: ( )
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) 1-2 Fe13, KCNS? .
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: ( K3[Fe(SCN)6)]?)
: ( Fe+2 Fe+3 )
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