: 25 , 100 , 2 10 , , , .
: , (1/2H2SO4) = 2 /, .
: , . 2 100 , , . 10 , 3 2 / . . 0,1 .
: - (φ0(MnO4-+8H+/Mn2+ + 4H2O) = + 1,51 , φ0(O2+2H+/H2O2) = + 0,68 ), , , .
:
____________________________________________________________________________
, V1(KMnO4) =; V2(KMnO4) =; V3(KMnO4) =; V(KMnO4) =, :
ω %(H2O2) = C(1/5KMnO4)M(1/2H2O2)V(KMnO4)V 100% / (1000m(H2O2)V ),
:
C(1/5KMnO4) , /;
M(1/2H2O2) , /;
V(KMnO4) , , ;
V , , ;
m(H2O2) , ; (ρ = 1 /)
V , .
ω%(H2O2) =___________________________________________________________________________
.
:______________________________________________________________________
:
1. ?
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2. -?
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3. ?
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11: . .
6.
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- - . - , , - . (). Rf, , (1), , (1). Rf .
. , , , , , , , .
: -, , (, , , ), , 0,05% .
: 3 8,5 .
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, : : ( 4:1:5). 6 .
, .
2 . 0,05% .
5-6 600 .
. Rf. Rf Rf , .
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12: . 3.
7.
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1.
: ; ; ; ; .
: ; C(l/2Na2S04) - 1 /; C(NaCl) = 1 /; .
: (0,5 ).
(h0): .
10 :
1 - ;
2 - 1,0 /;
3 - 1,0 /.
1 -2 , .
20 (h). .
1.